v5:reference:loadbalancer:getconnection
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
v5:reference:loadbalancer:getconnection [2017/05/11 00:35] – mnewnham | v5:reference:loadbalancer:getconnection [2017/05/11 00:51] (current) – [Usage] mnewnham | ||
---|---|---|---|
Line 20: | Line 20: | ||
--------------------------- | --------------------------- | ||
<WRAP tip> | <WRAP tip> | ||
- | To ensure the accuracy of the response, you should have executed at least one statement against the load balancer connection | + | To ensure the accuracy of the response, you should have already |
</ | </ | ||
===== Usage ===== | ===== Usage ===== | ||
+ | If the system could not determine whether the command to be executed is read-only or not, for example in a stored procedure, then this method can be used to retrieve a connection of the appropriate type. | ||
<code php> | <code php> | ||
+ | $db = new ADOdbLoadBalancer; | ||
+ | |||
+ | $driver = ' | ||
+ | $database = ' | ||
+ | $user = ' | ||
+ | $password = ' | ||
+ | $host = ' | ||
+ | $db0 = new ADOdbLoadBalancerConnection( $driver, | ||
+ | ' | ||
+ | 10, | ||
+ | false, | ||
+ | $host, | ||
+ | $user, | ||
+ | $password, | ||
+ | $database ); | ||
+ | /* | ||
+ | * Add the connection to the pool | ||
+ | */ | ||
+ | $db-> | ||
+ | $db1 = new ADOdbLoadBalancerConnection( $driver, | ||
+ | ' | ||
+ | 10, | ||
+ | false, | ||
+ | $host, | ||
+ | $user, | ||
+ | $password, | ||
+ | $database ); | ||
+ | /* | ||
+ | * Add the connection to the pool | ||
+ | */ | ||
+ | $db-> | ||
+ | |||
+ | /* | ||
+ | * Execute something to ensure connection accuracy | ||
+ | */ | ||
+ | $db-> | ||
+ | |||
+ | /* | ||
+ | * Find a readwrite connection, pin it for the next statement | ||
+ | */ | ||
+ | $db-> | ||
+ | |||
+ | /* | ||
+ | * Now construct a stored procedure and execute it against $db, | ||
+ | * because it is pinned, it will execute against the ' | ||
+ | */ | ||
+ | $stmt = $db-> | ||
+ | $val1 = ' | ||
+ | $par1 = ' | ||
+ | $db-> | ||
+ | $db-> | ||
</ | </ | ||
v5/reference/loadbalancer/getconnection.1494455727.txt.gz · Last modified: 2017/05/11 00:35 by mnewnham