chg: [etc] new default kvrocks configuration
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@ -1,35 +1,67 @@
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################################ GENERAL #####################################
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# By default kvrocks listens for connections from all the network interfaces
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# available on the server. It is possible to listen to just one or multiple
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# interfaces using the "bind" configuration directive, followed by one or
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# more IP addresses.
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# By default kvrocks listens for connections from localhost interface.
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# It is possible to listen to just one or multiple interfaces using
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# the "bind" configuration directive, followed by one or more IP addresses.
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#
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# Examples:
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#
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# bind 192.168.1.100 10.0.0.1
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bind 127.0.0.1
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#bind 0.0.0.0
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# bind 127.0.0.1 ::1
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bind 0.0.0.0
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# Unix socket.
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#
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# Specify the path for the unix socket that will be used to listen for
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# incoming connections. There is no default, so kvrocks will not listen
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# on a unix socket when not specified.
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#
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# unixsocket /tmp/kvrocks.sock
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# unixsocketperm 777
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# Accept connections on the specified port, default is 6666.
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port 3033
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port 3033
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# Close the connection after a client is idle for N seconds (0 to disable)
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timeout 0
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# The number of worker's threads, increase or decrease it would effect the performance.
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# The number of worker's threads, increase or decrease would affect the performance.
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workers 8
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# The number of replication worker's threads, increase or decrease it would effect the replication performance.
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# Default: 1
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repl-workers 1
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# By default, kvrocks does not run as a daemon. Use 'yes' if you need it.
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# Note that kvrocks will write a PID file in /var/run/kvrocks.pid when daemonized
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daemonize no
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# By default kvrocks does not run as a daemon. Use 'yes' if you need it.
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# Note that kvrocks will write a pid file in /var/run/kvrocks.pid when daemonized.
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daemonize yes
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# Kvrocks implements the cluster solution that is similar to the Redis cluster solution.
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# You can get cluster information by CLUSTER NODES|SLOTS|INFO command, it also is
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# adapted to redis-cli, redis-benchmark, Redis cluster SDK, and Redis cluster proxy.
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# But kvrocks doesn't support communicating with each other, so you must set
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# cluster topology by CLUSTER SETNODES|SETNODEID commands, more details: #219.
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#
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# PLEASE NOTE:
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# If you enable cluster, kvrocks will encode key with its slot id calculated by
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# CRC16 and modulo 16384, encoding key with its slot id makes it efficient to
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# migrate keys based on the slot. So if you enabled at first time, cluster mode must
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# not be disabled after restarting, and vice versa. That is to say, data is not
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# compatible between standalone mode with cluster mode, you must migrate data
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# if you want to change mode, otherwise, kvrocks will make data corrupt.
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#
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# Default: no
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cluster-enabled no
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# Persist the cluster nodes topology in local file($dir/nodes.conf). This configuration
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# takes effect only if the cluster mode was enabled.
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#
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# If yes, it will try to load the cluster topology from the local file when starting,
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# and dump the cluster nodes into the file if it was changed.
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#
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# Default: yes
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# persist-cluster-nodes-enabled yes
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# Set the max number of connected clients at the same time. By default
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# this limit is set to 10000 clients, however if the server is not
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# this limit is set to 10000 clients. However, if the server is not
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# able to configure the process file limit to allow for the specified limit
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# the max number of allowed clients is set to the current file limit
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#
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@ -53,13 +85,13 @@ maxclients 10000
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# If the master is password protected (using the "masterauth" configuration
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# directive below) it is possible to tell the slave to authenticate before
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# starting the replication synchronization process, otherwise the master will
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# starting the replication synchronization process. Otherwise, the master will
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# refuse the slave request.
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#
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# masterauth foobared
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# Master-Salve replication would check db name is matched. if not, the slave should
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# refuse to sync the db from master. Don't use default value, set the db-name to identify
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# refuse to sync the db from master. Don't use the default value, set the db-name to identify
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# the cluster.
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db-name change.me.db
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@ -67,14 +99,30 @@ db-name change.me.db
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#
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# The DB will be written inside this directory
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# Note that you must specify a directory here, not a file name.
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dir ./dbcycat
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dir /tmp/kvrocks
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# The logs of server will be stored in this directory. If you don't specify
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# one directory, by default, we store logs in the working directory that set
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# by 'dir' above.
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# log-dir /tmp/kvrocks
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# You can configure where to store your server logs by the log-dir.
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# If you don't specify one, we will use the above `dir` as our default log directory.
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# We also can send logs to stdout/stderr is as simple as:
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#
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log-dir stdout
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# When running daemonized, kvrocks writes a pid file in ${CONFIG_DIR}/kvrocks.pid by
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# Log level
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# Possible values: info, warning, error, fatal
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# Default: info
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log-level info
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# You can configure log-retention-days to control whether to enable the log cleaner
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# and the maximum retention days that the INFO level logs will be kept.
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#
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# if set to -1, that means to disable the log cleaner.
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# if set to 0, all previous INFO level logs will be immediately removed.
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# if set to between 0 to INT_MAX, that means it will retent latest N(log-retention-days) day logs.
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# By default the log-retention-days is -1.
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log-retention-days -1
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# When running in daemonize mode, kvrocks writes a PID file in ${CONFIG_DIR}/kvrocks.pid by
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# default. You can specify a custom pid file location here.
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# pidfile /var/run/kvrocks.pid
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pidfile ""
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@ -121,6 +169,20 @@ tcp-backlog 511
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# connect 'master's listening port' when synchronization.
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master-use-repl-port no
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# Currently, master only checks sequence number when replica asks for PSYNC,
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# that is not enough since they may have different replication histories even
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# the replica asking sequence is in the range of the master current WAL.
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#
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# We design 'Replication Sequence ID' PSYNC, we add unique replication id for
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# every write batch (the operation of each command on the storage engine), so
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# the combination of replication id and sequence is unique for write batch.
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# The master can identify whether the replica has the same replication history
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# by checking replication id and sequence.
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#
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# By default, it is not enabled since this stricter check may easily lead to
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# full synchronization.
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use-rsid-psync no
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# Master-Slave replication. Use slaveof to make a kvrocks instance a copy of
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# another kvrocks server. A few things to understand ASAP about kvrocks replication.
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#
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@ -142,16 +204,39 @@ master-use-repl-port no
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# is still in progress, the slave can act in two different ways:
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#
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# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will
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# still reply to client requests, possibly with out of date data, or the
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# still reply to client requests, possibly with out-of-date data, or the
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# data set may just be empty if this is the first synchronization.
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#
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# 2) if slave-serve-stale-data is set to 'no' the slave will reply with
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# an error "SYNC with master in progress" to all the kind of commands
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# an error "SYNC with master in progress" to all kinds of commands
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# but to INFO and SLAVEOF.
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#
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slave-serve-stale-data yes
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# The maximum allowed rate (in MB/s) that should be used by Replication.
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# To guarantee slave's data safe and serve when it is in full synchronization
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# state, slave still keep itself data. But this way needs to occupy much disk
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# space, so we provide a way to reduce disk occupation, slave will delete itself
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# entire database before fetching files from master during full synchronization.
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# If you want to enable this way, you can set 'slave-delete-db-before-fullsync'
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# to yes, but you must know that database will be lost if master is down during
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# full synchronization, unless you have a backup of database.
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#
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# This option is similar redis replicas RDB diskless load option:
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# repl-diskless-load on-empty-db
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#
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# Default: no
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slave-empty-db-before-fullsync no
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# If replicas need full synchronization with master, master need to create
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# checkpoint for feeding replicas, and replicas also stage a checkpoint of
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# the master. If we also keep the backup, it maybe occupy extra disk space.
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# You can enable 'purge-backup-on-fullsync' if disk is not sufficient, but
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# that may cause remote backup copy failing.
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#
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# Default: no
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purge-backup-on-fullsync no
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# The maximum allowed rate (in MB/s) that should be used by replication.
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# If the rate exceeds max-replication-mb, replication will slow down.
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# Default: 0 (i.e. no limit)
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max-replication-mb 0
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@ -170,39 +255,99 @@ max-db-size 0
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# The maximum backup to keep, server cron would run every minutes to check the num of current
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# backup, and purge the old backup if exceed the max backup num to keep. If max-backup-to-keep
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# is 0, no backup would be keep.
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# exception: the backup will not be purged if it's not yet expired (when max-backup-keep-hours is not 0)
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# is 0, no backup would be kept. But now, we only support 0 or 1.
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max-backup-to-keep 1
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# The maximum hours to keep the backup. If max-backup-keep-hours is 0, wouldn't purge any backup.
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# default: 1 Week
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max-backup-keep-hours 168
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# default: 1 day
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max-backup-keep-hours 24
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# Enable the kvrocks to support the codis protocol, if the db enabled the codis mode at first open,
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# this option must not be disabled after restarted, and vice versa
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# Defalut: no
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codis-enabled no
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# Ratio of the samples would be recorded when the profiling was enabled.
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# we simply use the rand to determine whether to record the sample or not.
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#
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# Default: 0
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profiling-sample-ratio 0
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# There is no limit to this length. Just be aware that it will consume memory.
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# You can reclaim memory used by the perf log with PERFLOG RESET.
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# max-bitmap-to-string-mb use to limit the max size of bitmap to string transformation(MB).
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#
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# Default: 256
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profiling-sample-record-max-len 256
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# Default: 16
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max-bitmap-to-string-mb 16
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# profiling-sample-record-threshold-ms use to tell the kvrocks when to record.
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################################## TLS ###################################
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# By default, TLS/SSL is disabled, i.e. `tls-port` is set to 0.
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# To enable it, `tls-port` can be used to define TLS-listening ports.
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# tls-port 0
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# Configure a X.509 certificate and private key to use for authenticating the
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# server to connected clients, masters or cluster peers.
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# These files should be PEM formatted.
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#
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# Default: 100 millisecond
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profiling-sample-record-threshold-ms 100
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# tls-cert-file kvrocks.crt
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# tls-key-file kvrocks.key
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# If the key file is encrypted using a passphrase, it can be included here
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# as well.
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#
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# tls-key-file-pass secret
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# Configure a CA certificate(s) bundle or directory to authenticate TLS/SSL
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# clients and peers. Kvrocks requires an explicit configuration of at least one
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# of these, and will not implicitly use the system wide configuration.
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#
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# tls-ca-cert-file ca.crt
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# tls-ca-cert-dir /etc/ssl/certs
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# By default, clients on a TLS port are required
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# to authenticate using valid client side certificates.
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#
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# If "no" is specified, client certificates are not required and not accepted.
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# If "optional" is specified, client certificates are accepted and must be
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# valid if provided, but are not required.
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#
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# tls-auth-clients no
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# tls-auth-clients optional
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# By default, only TLSv1.2 and TLSv1.3 are enabled and it is highly recommended
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# that older formally deprecated versions are kept disabled to reduce the attack surface.
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# You can explicitly specify TLS versions to support.
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# Allowed values are case insensitive and include "TLSv1", "TLSv1.1", "TLSv1.2",
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# "TLSv1.3" (OpenSSL >= 1.1.1) or any combination.
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# To enable only TLSv1.2 and TLSv1.3, use:
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#
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# tls-protocols "TLSv1.2 TLSv1.3"
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# Configure allowed ciphers. See the ciphers(1ssl) manpage for more information
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# about the syntax of this string.
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#
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# Note: this configuration applies only to <= TLSv1.2.
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#
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# tls-ciphers DEFAULT:!MEDIUM
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# Configure allowed TLSv1.3 ciphersuites. See the ciphers(1ssl) manpage for more
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# information about the syntax of this string, and specifically for TLSv1.3
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# ciphersuites.
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#
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# tls-ciphersuites TLS_CHACHA20_POLY1305_SHA256
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# When choosing a cipher, use the server's preference instead of the client
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# preference. By default, the server follows the client's preference.
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#
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# tls-prefer-server-ciphers yes
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# By default, TLS session caching is enabled to allow faster and less expensive
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# reconnections by clients that support it. Use the following directive to disable
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# caching.
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#
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# tls-session-caching no
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# Change the default number of TLS sessions cached. A zero value sets the cache
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# to unlimited size. The default size is 20480.
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#
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# tls-session-cache-size 5000
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# Change the default timeout of cached TLS sessions. The default timeout is 300
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# seconds.
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#
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# tls-session-cache-timeout 60
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################################## SLOW LOG ###################################
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# The Kvrocks Slow Log is a system to log queries that exceeded a specified
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# The Kvrocks Slow Log is a mechanism to log queries that exceeded a specified
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# execution time. The execution time does not include the I/O operations
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# like talking with the client, sending the reply and so forth,
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# but just the time needed to actually execute the command (this is the only
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@ -235,6 +380,46 @@ slowlog-max-len 128
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# They do not enable continuous liveness pings back to your supervisor.
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supervised no
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################################## PERF LOG ###################################
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# The Kvrocks Perf Log is a mechanism to log queries' performance context that
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# exceeded a specified execution time. This mechanism uses rocksdb's
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# Perf Context and IO Stats Context, Please see:
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# https://github.com/facebook/rocksdb/wiki/Perf-Context-and-IO-Stats-Context
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#
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# This mechanism is enabled when profiling-sample-commands is not empty and
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# profiling-sample-ratio greater than 0.
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# It is important to note that this mechanism affects performance, but it is
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# useful for troubleshooting performance bottlenecks, so it should only be
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# enabled when performance problems occur.
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# The name of the commands you want to record. Must be original name of
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# commands supported by Kvrocks. Use ',' to separate multiple commands and
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# use '*' to record all commands supported by Kvrocks.
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# Example:
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# - Single command: profiling-sample-commands get
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# - Multiple commands: profiling-sample-commands get,mget,hget
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#
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# Default: empty
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# profiling-sample-commands ""
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# Ratio of the samples would be recorded. It is a number between 0 and 100.
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# We simply use the rand to determine whether to record the sample or not.
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#
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# Default: 0
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profiling-sample-ratio 0
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# There is no limit to this length. Just be aware that it will consume memory.
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# You can reclaim memory used by the perf log with PERFLOG RESET.
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#
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# Default: 256
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profiling-sample-record-max-len 256
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# profiling-sample-record-threshold-ms use to tell the kvrocks when to record.
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#
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# Default: 100 millisecond
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profiling-sample-record-threshold-ms 100
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################################## CRON ###################################
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# Compact Scheduler, auto compact at schedule time
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@ -248,23 +433,80 @@ supervised no
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# 0-7am every day.
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compaction-checker-range 0-7
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# Bgsave scheduler, auto bgsave at schedule time
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# Bgsave scheduler, auto bgsave at scheduled time
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# time expression format is the same as crontab(currently only support * and int)
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# e.g. bgsave-cron 0 3 * * * 0 4 * * *
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# would bgsave the db at 3am and 4am everyday
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# would bgsave the db at 3am and 4am every day
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# Command renaming.
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#
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# It is possible to change the name of dangerous commands in a shared
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# environment. For instance, the KEYS command may be renamed into something
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# hard to guess so that it will still be available for internal-use tools
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# but not available for general clients.
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#
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# Example:
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#
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# rename-command KEYS b840fc02d524045429941cc15f59e41cb7be6c52
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#
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# It is also possible to completely kill a command by renaming it into
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# an empty string:
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#
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# rename-command KEYS ""
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################################ MIGRATE #####################################
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# If the network bandwidth is completely consumed by the migration task,
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# it will affect the availability of kvrocks. To avoid this situation,
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# migrate-speed is adopted to limit the migrating speed.
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# Migrating speed is limited by controlling the duration between sending data,
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# the duration is calculated by: 1000000 * migrate-pipeline-size / migrate-speed (us).
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# Value: [0,INT_MAX], 0 means no limit
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#
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# Default: 4096
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migrate-speed 4096
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# In order to reduce data transmission times and improve the efficiency of data migration,
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# pipeline is adopted to send multiple data at once. Pipeline size can be set by this option.
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# Value: [1, INT_MAX], it can't be 0
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#
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# Default: 16
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migrate-pipeline-size 16
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# In order to reduce the write forbidden time during migrating slot, we will migrate the incremental
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# data several times to reduce the amount of incremental data. Until the quantity of incremental
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# data is reduced to a certain threshold, slot will be forbidden write. The threshold is set by
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# this option.
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# Value: [1, INT_MAX], it can't be 0
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#
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# Default: 10000
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migrate-sequence-gap 10000
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################################ ROCKSDB #####################################
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# Specify the capacity of metadata column family block cache. Larger block cache
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# may make request faster while more keys would be cached. Max Size is 200*1024.
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# Specify the capacity of metadata column family block cache. A larger block cache
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# may make requests faster while more keys would be cached. Max Size is 200*1024.
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# Default: 2048MB
|
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rocksdb.metadata_block_cache_size 2048
|
||||
|
||||
# Specify the capacity of subkey column family block cache. Larger block cache
|
||||
# may make request faster while more keys would be cached. Max Size is 200*1024.
|
||||
# Specify the capacity of subkey column family block cache. A larger block cache
|
||||
# may make requests faster while more keys would be cached. Max Size is 200*1024.
|
||||
# Default: 2048MB
|
||||
rocksdb.subkey_block_cache_size 2048
|
||||
|
||||
# Metadata column family and subkey column family will share a single block cache
|
||||
# if set 'yes'. The capacity of shared block cache is
|
||||
# metadata_block_cache_size + subkey_block_cache_size
|
||||
#
|
||||
# Default: yes
|
||||
rocksdb.share_metadata_and_subkey_block_cache yes
|
||||
|
||||
# A global cache for table-level rows in RocksDB. If almost always point
|
||||
# lookups, enlarging row cache may improve read performance. Otherwise,
|
||||
# if we enlarge this value, we can lessen metadata/subkey block cache size.
|
||||
#
|
||||
# Default: 0 (disabled)
|
||||
rocksdb.row_cache_size 0
|
||||
|
||||
# Number of open files that can be used by the DB. You may need to
|
||||
# increase this if your database has a large working set. Value -1 means
|
||||
# files opened are always kept open. You can estimate number of files based
|
||||
|
@ -289,7 +531,7 @@ rocksdb.max_open_files 8096
|
|||
# default is 64MB
|
||||
rocksdb.write_buffer_size 64
|
||||
|
||||
# Target file size for compaction, target file size for Leve N can be caculated
|
||||
# Target file size for compaction, target file size for Leve N can be calculated
|
||||
# by target_file_size_base * (target_file_size_multiplier ^ (L-1))
|
||||
#
|
||||
# Default: 128MB
|
||||
|
@ -320,14 +562,6 @@ rocksdb.max_background_flushes 4
|
|||
# Default: 2 (i.e. no subcompactions)
|
||||
rocksdb.max_sub_compactions 2
|
||||
|
||||
# We impl the repliction with rocksdb WAL, it would trigger full sync when the seq was out of range.
|
||||
# wal_ttl_seconds and wal_size_limit_mb would affect how archived logswill be deleted.
|
||||
# If WAL_ttl_seconds is not 0, then WAL files will be checked every WAL_ttl_seconds / 2 and those that
|
||||
# are older than WAL_ttl_seconds will be deleted#
|
||||
#
|
||||
# Default: 3 Hours
|
||||
rocksdb.wal_ttl_seconds 10800
|
||||
|
||||
# In order to limit the size of WALs, RocksDB uses DBOptions::max_total_wal_size
|
||||
# as the trigger of column family flush. Once WALs exceed this size, RocksDB
|
||||
# will start forcing the flush of column families to allow deletion of some
|
||||
|
@ -349,15 +583,23 @@ rocksdb.wal_ttl_seconds 10800
|
|||
# default is 512MB
|
||||
rocksdb.max_total_wal_size 512
|
||||
|
||||
# We implement the replication with rocksdb WAL, it would trigger full sync when the seq was out of range.
|
||||
# wal_ttl_seconds and wal_size_limit_mb would affect how archived logs will be deleted.
|
||||
# If WAL_ttl_seconds is not 0, then WAL files will be checked every WAL_ttl_seconds / 2 and those that
|
||||
# are older than WAL_ttl_seconds will be deleted#
|
||||
#
|
||||
# Default: 3 Hours
|
||||
rocksdb.wal_ttl_seconds 10800
|
||||
|
||||
# If WAL_ttl_seconds is 0 and WAL_size_limit_MB is not 0,
|
||||
# WAL files will be checked every 10 min and if total size is greater
|
||||
# then WAL_size_limit_MB, they will be deleted starting with the
|
||||
# earliest until size_limit is met. All empty files will be deleted
|
||||
# earliest until size_limit is met. All empty files will be deleted
|
||||
# Default: 16GB
|
||||
rocksdb.wal_size_limit_mb 16384
|
||||
|
||||
# Approximate size of user data packed per block. Note that the
|
||||
# block size specified here corresponds to uncompressed data. The
|
||||
# block size specified here corresponds to uncompressed data. The
|
||||
# actual size of the unit read from disk may be smaller if
|
||||
# compression is enabled.
|
||||
#
|
||||
|
@ -369,8 +611,9 @@ rocksdb.block_size 16384
|
|||
# Default: no
|
||||
rocksdb.cache_index_and_filter_blocks yes
|
||||
|
||||
# Specify the compression to use.
|
||||
# Accept value: "no", "snappy"
|
||||
# Specify the compression to use. Only compress level greater
|
||||
# than 2 to improve performance.
|
||||
# Accept value: "no", "snappy", "lz4", "zstd", "zlib"
|
||||
# default snappy
|
||||
rocksdb.compression snappy
|
||||
|
||||
|
@ -379,7 +622,7 @@ rocksdb.compression snappy
|
|||
# That way RocksDB's compaction is doing sequential instead of random reads.
|
||||
# When non-zero, we also force new_table_reader_for_compaction_inputs to
|
||||
# true.
|
||||
#
|
||||
#
|
||||
# Default: 2 MB
|
||||
rocksdb.compaction_readahead_size 2097152
|
||||
|
||||
|
@ -395,7 +638,7 @@ rocksdb.delayed_write_rate 0
|
|||
# If enable_pipelined_write is true, separate write thread queue is
|
||||
# maintained for WAL write and memtable write.
|
||||
#
|
||||
# Default: no
|
||||
# Default: no
|
||||
rocksdb.enable_pipelined_write no
|
||||
|
||||
# Soft limit on number of level-0 files. We start slowing down writes at this
|
||||
|
@ -405,6 +648,16 @@ rocksdb.enable_pipelined_write no
|
|||
# Default: 20
|
||||
rocksdb.level0_slowdown_writes_trigger 20
|
||||
|
||||
# Maximum number of level-0 files. We stop writes at this point.
|
||||
#
|
||||
# Default: 40
|
||||
rocksdb.level0_stop_writes_trigger 40
|
||||
|
||||
# Number of files to trigger level-0 compaction.
|
||||
#
|
||||
# Default: 4
|
||||
rocksdb.level0_file_num_compaction_trigger 4
|
||||
|
||||
# if not zero, dump rocksdb.stats to LOG every stats_dump_period_sec
|
||||
#
|
||||
# Default: 0
|
||||
|
@ -414,5 +667,121 @@ rocksdb.stats_dump_period_sec 0
|
|||
#
|
||||
# Default: no
|
||||
rocksdb.disable_auto_compactions no
|
||||
|
||||
# BlobDB(key-value separation) is essentially RocksDB for large-value use cases.
|
||||
# Since 6.18.0, The new implementation is integrated into the RocksDB core.
|
||||
# When set, large values (blobs) are written to separate blob files, and only
|
||||
# pointers to them are stored in SST files. This can reduce write amplification
|
||||
# for large-value use cases at the cost of introducing a level of indirection
|
||||
# for reads. Please see: https://github.com/facebook/rocksdb/wiki/BlobDB.
|
||||
#
|
||||
# Note that when enable_blob_files is set to yes, BlobDB-related configuration
|
||||
# items will take effect.
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.enable_blob_files no
|
||||
|
||||
# The size of the smallest value to be stored separately in a blob file. Values
|
||||
# which have an uncompressed size smaller than this threshold are stored alongside
|
||||
# the keys in SST files in the usual fashion.
|
||||
#
|
||||
# Default: 4096 byte, 0 means that all values are stored in blob files
|
||||
rocksdb.min_blob_size 4096
|
||||
|
||||
# The size limit for blob files. When writing blob files, a new file is
|
||||
# opened once this limit is reached.
|
||||
#
|
||||
# Default: 268435456 bytes
|
||||
rocksdb.blob_file_size 268435456
|
||||
|
||||
# Enables garbage collection of blobs. Valid blobs residing in blob files
|
||||
# older than a cutoff get relocated to new files as they are encountered
|
||||
# during compaction, which makes it possible to clean up blob files once
|
||||
# they contain nothing but obsolete/garbage blobs.
|
||||
# See also rocksdb.blob_garbage_collection_age_cutoff below.
|
||||
#
|
||||
# Default: yes
|
||||
rocksdb.enable_blob_garbage_collection yes
|
||||
|
||||
# The percentage cutoff in terms of blob file age for garbage collection.
|
||||
# Blobs in the oldest N blob files will be relocated when encountered during
|
||||
# compaction, where N = (garbage_collection_cutoff/100) * number_of_blob_files.
|
||||
# Note that this value must belong to [0, 100].
|
||||
#
|
||||
# Default: 25
|
||||
rocksdb.blob_garbage_collection_age_cutoff 25
|
||||
|
||||
|
||||
# The purpose of the following three options are to dynamically adjust the upper limit of
|
||||
# the data that each layer can store according to the size of the different
|
||||
# layers of the LSM. Enabling this option will bring some improvements in
|
||||
# deletion efficiency and space amplification, but it will lose a certain
|
||||
# amount of read performance.
|
||||
# If you want to know more details about Levels' Target Size, you can read RocksDB wiki:
|
||||
# https://github.com/facebook/rocksdb/wiki/Leveled-Compaction#levels-target-size
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.level_compaction_dynamic_level_bytes no
|
||||
|
||||
# The total file size of level-1 sst.
|
||||
#
|
||||
# Default: 268435456 bytes
|
||||
rocksdb.max_bytes_for_level_base 268435456
|
||||
|
||||
# Multiplication factor for the total file size of L(n+1) layers.
|
||||
# This option is a double type number in RocksDB, but kvrocks is
|
||||
# not support the double data type number yet, so we use integer
|
||||
# number instead of double currently.
|
||||
#
|
||||
# Default: 10
|
||||
rocksdb.max_bytes_for_level_multiplier 10
|
||||
|
||||
# This feature only takes effect in Iterators and MultiGet.
|
||||
# If yes, RocksDB will try to read asynchronously and in parallel as much as possible to hide IO latency.
|
||||
# In iterators, it will prefetch data asynchronously in the background for each file being iterated on.
|
||||
# In MultiGet, it will read the necessary data blocks from those files in parallel as much as possible.
|
||||
|
||||
# Default no
|
||||
rocksdb.read_options.async_io no
|
||||
|
||||
# If yes, the write will be flushed from the operating system
|
||||
# buffer cache before the write is considered complete.
|
||||
# If this flag is enabled, writes will be slower.
|
||||
# If this flag is disabled, and the machine crashes, some recent
|
||||
# rites may be lost. Note that if it is just the process that
|
||||
# crashes (i.e., the machine does not reboot), no writes will be
|
||||
# lost even if sync==false.
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.write_options.sync no
|
||||
|
||||
# If yes, writes will not first go to the write ahead log,
|
||||
# and the write may get lost after a crash.
|
||||
#
|
||||
# Deafult: no
|
||||
rocksdb.write_options.disable_wal no
|
||||
|
||||
# If enabled and we need to wait or sleep for the write request, fails
|
||||
# immediately.
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.write_options.no_slowdown no
|
||||
|
||||
# If enabled, write requests are of lower priority if compaction is
|
||||
# behind. In this case, no_slowdown = true, the request will be canceled
|
||||
# immediately. Otherwise, it will be slowed down.
|
||||
# The slowdown value is determined by RocksDB to guarantee
|
||||
# it introduces minimum impacts to high priority writes.
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.write_options.low_pri no
|
||||
|
||||
# If enabled, this writebatch will maintain the last insert positions of each
|
||||
# memtable as hints in concurrent write. It can improve write performance
|
||||
# in concurrent writes if keys in one writebatch are sequential.
|
||||
#
|
||||
# Default: no
|
||||
rocksdb.write_options.memtable_insert_hint_per_batch no
|
||||
|
||||
################################ NAMESPACE #####################################
|
||||
# namespace.test change.me
|
||||
|
|
Loading…
Reference in New Issue