docs: add doc for backend's options (#1353)

GreptimeTeam · Dec 5, 2024 · 0ed478a · 0ed478a
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diff --git a/docs/user-guide/deployments/configuration.md b/docs/user-guide/deployments/configuration.md
@@ -639,7 +639,11 @@ use_memory_store = false
 ## - Using Remote WAL
 ## - Using shared storage (e.g., s3).
 enable_region_failover = false
-# The datastore for meta server.
+# The datastore for metasrv.
+## Available datastore:
+## - "EtcdStore" (default)
+## - "MemoryStore" (In memory metadata storage - only used for testing.)
+## - "PostgresStore"
 backend = "EtcdStore"
 
 ## Procedure storage options.

diff --git a/.../docusaurus-plugin-content-docs/current/user-guide/deployments/configuration.md b/.../docusaurus-plugin-content-docs/current/user-guide/deployments/configuration.md
@@ -626,6 +626,10 @@ use_memory_store = false
 ## - 使用共享存储（例如 s3）。
 enable_region_failover = false
 # metasrv 的数据库类型.
+## 可选项：
+## - "EtcdStore" (默认值)
+## - "MemoryStore" (纯内存存储 - 仅用于测试)
+## - "PostgresStore"
 backend = "EtcdStore"
 
 ## Procedure 选项

diff --git a/...saurus-plugin-content-docs/version-0.10/user-guide/deployments/configuration.md b/...saurus-plugin-content-docs/version-0.10/user-guide/deployments/configuration.md
@@ -609,6 +609,10 @@ use_memory_store = false
 ## - 使用共享存储（例如 s3）。
 enable_region_failover = false
 # metasrv 的数据库类型.
+## 可选项：
+## - "EtcdStore" (默认值)
+## - "MemoryStore" (纯内存存储 - 仅用于测试)
+## - "PostgresStore"
 backend = "EtcdStore"
 
 ## Procedure 选项

diff --git a/versioned_docs/version-0.10/user-guide/deployments/configuration.md b/versioned_docs/version-0.10/user-guide/deployments/configuration.md
@@ -622,7 +622,11 @@ use_memory_store = false
 ## - Using Remote WAL
 ## - Using shared storage (e.g., s3).
 enable_region_failover = false
-# The datastore for meta server.
+# The datastore for metasrv.
+## Available datastore:
+## - "EtcdStore" (default)
+## - "MemoryStore" (In memory metadata storage - only used for testing.)
+## - "PostgresStore"
 backend = "EtcdStore"
 
 ## Procedure storage options.