Document persistent MySQL worker pooling

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root 2026-07-17 00:59:10 +00:00
parent 96e5813a0b
commit 0e43a89636

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@ -15,7 +15,7 @@ Establishes a connection to a MySQL server and returns a pointer to the connecti
This connection handle is then used with helpers such as `mysql_query()`, `mysql_error()`, and `mysql_disconnect()`.
MySQL handles are request-scoped framework resources. Repeated `mysql_connect()` calls with the same host and credentials reuse one server connection within the current request. Each call creates a lease; `mysql_disconnect()` releases that lease, and UCE closes the pooled server connection during request cleanup. Never store a `MySQL*` in globals, sessions, or other state that can outlive the current request.
MySQL handles are request-scoped framework resources. Repeated `mysql_connect()` calls with the same host and credentials reuse one server connection within the current request. Each call creates a lease and `mysql_disconnect()` releases that lease. At request cleanup UCE returns the server connection to the current worker's persistent pool, then resets it before cross-request reuse. The pool holds up to `MYSQL_PERSISTENT_POOL_SIZE` connections per worker (default 8); set the size to 0 to disable cross-request reuse. Never store a `MySQL*` in globals, sessions, or other state that can outlive the current request.
:example
MySQL* db = mysql_connect();