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POMySQL traffic compression with connection pool
 

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    <p>I am trying to implement Connection Pooling using Commons Pool and DBCP. I am able to establish a connection to the database and everything works as expected, except traffic compression. <BR/> This is my configuration:<BR/> - Commons DBCP 1.4<BR/> - Commons Pool 1.6<BR/> - MySQL Connector Java 5.1.21<BR/> - MySQL Server 5.5 on Windows Server 2008<BR/> - Java 1.6<BR/></p> <p>Please consider this code snippet to instantiate the connection pool:</p> <pre><code>private void setupDataSource(Hashtable&lt;String, String&gt; data) { try { GenericObjectPool&lt;Connection&gt; pool = new GenericObjectPool&lt;Connection&gt;(); pool.setMinIdle(5); pool.setMaxActive(-1); pool.setTestOnBorrow(true); pool.setTimeBetweenEvictionRunsMillis(5000); pool.setMinEvictableIdleTimeMillis(300000); Properties props = new Properties(); props.setProperty("user", "root"); props.setProperty("password", "password"); props.setProperty("useCompression", "true"); ConnectionFactory cf = new DriverConnectionFactory(new com.mysql.jdbc.Driver(), "jdbc:mysql://" + ip + ":" + port, props); KeyedObjectPoolFactory&lt;String, GenericObjectPool&lt;Connection&gt;&gt; kopf =new GenericKeyedObjectPoolFactory&lt;String, GenericObjectPool&lt;Connection&gt;&gt;(null, 20, GenericObjectPool.WHEN_EXHAUSTED_GROW, 20, true, false); PoolableConnectionFactory pcf = new PoolableConnectionFactory(cf, pool, kopf, "Select 1;", false, true); PoolingDriver pd = new PoolingDriver(); pd.registerPool("MyPool", pool); }catch (Exception ex) { ex.printStackTrace(); } } </code></pre> <p>Then, to obtain a connection i use:</p> <pre><code>Connection conn = java.sql.DriverManager.getConnection("jdbc:apache:commons:dbcp:MyPool"); </code></pre> <p>First, is there another way to check if compression works, except comparing the outgoing network traffic in MSQL Tools?</p> <p>And what needs to be changed in order to enable compression?</p> <p>Thanks for your help</p> <p>klib</p>
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    1. COAfter some research, I found that the problem most probably is not with connection pooling, but with the MySQL-Connector. When using Connector Version 5.1.6 compression works just fine. Any ideas why the latest connector does not work as expected?
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