JPD2

What I So Awesome About Transient Cacheing?

The Transients API creates temporary entries into your database. One great use is to store the result of complex queries, which allows WordPress to run one query–to get the transient–instead of many queries, and get the same results.

This article explains very well how that works. This plugin automates the process for you.

Is It Safe To Call This Function In My Theme Or Plugin?

The safest method would be to wrap the call in a check of function_exists().

For example code see: https://gist.github.com/Shelob9/9425101#file-use_jpd2-php

This way if the JPD2 plugin is not activated, WordPress will run WP_Query directly, instead of returning a fatal error, which would suck.

How Long Does The Transient Last?

The transient lasts up to the default transient expiration time, unless an expiration value is set with the $expire argument.

How Do I Change The Default Transient Expiration Time?

Two ways:

1. 01Define the JPD2_EXP constant in wp-config, or anytime before this plugin is loaded.
2. 02Use the ‘JPD2_expire’ action

The action, if used, will override the constant.

How Do I Use A WP_User_Query or WP_Meta_Query?

By default arguments are passed to WP_Query. You may use the $type argument. You can set it to ‘wp_query’, which is the default, ‘wp_user_query’, or ‘wp_meta_query’.

Why Is This Plugin Called JPD2?

Because Star Wars.