Getting started with hibernate: Using c3p0 connection pool

We usually use data connection pools in actual projects, because the overhead is relatively small;

Jar package with c3p0 in the hibernate package;

Add the following to hibernate. cfg. xml:

<Property name = "c3p0. min_size"> 5 </property> <! -- Connection pool least connections --> <property name = "c3p0. max_size"> 20 </property> <! -- Maximum connections --> <property name = "c3p0. Timeout"> 5000 </property> <! -- Timeout duration --> <property name = "c3p0. max_statements"> 100 </property> <! -- Maximum number of cached statements -->