We all know that Poll is a core module which ships with Drupal. After installing this module we can setup poll and we can place a "most recent poll" block any where in region, usually its on a front page. I investigated this module and I found that it takes 20-25 queries to load most recent poll block and when a user submits a vote on that poll it does a cache_clear_all. Which was like WOW, in addition to submitting a vote users were also clearing my cached data. Optimizing or Caching poll's block for any kind of user (authenticated or anonymous) is like piece of cake, but figuring out how to do it was really a big pain in a neck.

I was going through one of my projects and I came to know that how simple it is to insert additional information into your site's search indexes using hook_nodeapi. A comprehensive details about hook_nodeapi can be found here.

Following are the steps involved to make this happen:

• Create a module that implements hook_nodeapi, lets say example_nodeapi()

function example_nodeapi($node, $op) {
  // Function definition here
}

Drupal API provide a hook function hook_block that allow developers to create block or set of blocks their way. hook is a keyword that will replace by the module name, for example example.module file will implement this hook as example_block()

For further details about this hook please visit here

Programmatically inserting, editing and deleting a taxonomy term using drupal api is as easy as A,B,C. After scanning taxonomy_term_save() function, it looks like that if we pass an associated array as an argument to this function with proper keys we can make this happen very easily.