php - Magento query caching -

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how cache query result in magento if creating module.

basically creating 1 module announcement in admin add announcement admin , displayed on front end(live website)

now if information entered though admin not dynamic want cache information while modifying(add, edit delete ) , show in front end. save database query time

if cache query result block still going generated every time. (besides, mysql has query cache)

it better cache block output saves more effort server.
http://www.magentocommerce.com/wiki/5_-_modules_and_development/block_cache_and_html_ouput


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