I am using ZEND Framework1. It will render time to be slow. How to improve the performance?
1 - Take a look at the query generated and optimize them for example instead of using "select * " you select just columns you need .
2 - Create index in the database for columns you use a lot in search...
3- Also you can use an other level is the caching system , you can use memcache server .
4- Check if there is a cache componenent , i don't know for zend1 but in zend2 there are too many caching level ; here are some many links :
http://framework.zend.com/manual/1.11/en/zend.cache.html
Zend how to use cache component
Hope it helps.