From 12fb3a21645aa9b9ec2274cea0e8bc6781b67de1 Mon Sep 17 00:00:00 2001 From: Xiaoyu Wang Date: Wed, 11 Jan 2023 17:24:36 +0800 Subject: [PATCH] docs: add database options 'stt_trigger' and 'tsdb_pagesize' --- docs/en/12-taos-sql/02-database.md | 6 +++++- docs/zh/12-taos-sql/02-database.md | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/docs/en/12-taos-sql/02-database.md b/docs/en/12-taos-sql/02-database.md index 92b73e5731..dd8bf2d0d8 100644 --- a/docs/en/12-taos-sql/02-database.md +++ b/docs/en/12-taos-sql/02-database.md @@ -71,7 +71,7 @@ database_option: { - SINGLE_STABLE: specifies whether the database can contain more than one supertable. - 0: The database can contain multiple supertables. - 1: The database can contain only one supertable. -- STT_TRIGGER: specifies the number of file merges triggered by flushed files. The default is 8, ranging from 1 to 16. +- STT_TRIGGER: specifies the number of file merges triggered by flushed files. The default is 8, ranging from 1 to 16. For high-frequency scenarios with few tables, it is recommended to use the default configuration or a smaller value for this parameter; For multi-table low-frequency scenarios, it is recommended to configure this parameter with a larger value. - TABLE_PREFIX：The prefix length in the table name that is ignored when distributing table to vnode based on table name. - TABLE_SUFFIX：The suffix length in the table name that is ignored when distributing table to vnode based on table name. - TSDB_PAGESIZE: The page size of the data storage engine in a vnode. The unit is KB. The default is 4 KB. The range is 1 to 16384, that is, 1 KB to 16 MB. @@ -116,6 +116,10 @@ alter_database_options: alter_database_option: { CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'} | CACHESIZE value + | BUFFER value + | PAGES value + | REPLICA value + | STT_TRIGGER value | WAL_LEVEL value | WAL_FSYNC_PERIOD value | KEEP value diff --git a/docs/zh/12-taos-sql/02-database.md b/docs/zh/12-taos-sql/02-database.md index 3ac7e98769..2b6ab8c059 100644 --- a/docs/zh/12-taos-sql/02-database.md +++ b/docs/zh/12-taos-sql/02-database.md @@ -71,7 +71,7 @@ database_option: { - SINGLE_STABLE：表示此数据库中是否只可以创建一个超级表，用于超级表列非常多的情况。 - 0：表示可以创建多张超级表。 - 1：表示只可以创建一张超级表。 -- STT_TRIGGER：表示落盘文件触发文件合并的个数。默认为 8，范围 1 到 16。 +- STT_TRIGGER：表示落盘文件触发文件合并的个数。默认为 1，范围 1 到 16。对于少表高频场景，此参数建议使用默认配置，或较小的值；而对于多表低频场景，此参数建议配置较大的值。 - TABLE_PREFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的前缀的长度。 - TABLE_SUFFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的后缀的长度。 - TSDB_PAGESIZE：一个 VNODE 中时序数据存储引擎的页大小，单位为 KB，默认为 4 KB。范围为 1 到 16384，即 1 KB到 16 MB。 @@ -116,6 +116,10 @@ alter_database_options: alter_database_option: { CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'} | CACHESIZE value + | BUFFER value + | PAGES value + | REPLICA value + | STT_TRIGGER value | WAL_LEVEL value | WAL_FSYNC_PERIOD value | KEEP value