Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

huudat_20099's avatar
huudat_20099
Icon for Nimbostratus rankNimbostratus
18 years ago

Caching problems

Hi Aaron,     I had the tender about cache engine, I saw that BIG-IP LTM have a module for caching so I wonder that whether BIG-IP could use as a cache engine or not. Did you have any documents ...
application delivery
design
performance
testing
James_Thomson's avatar
James_Thomson
Icon for Employee rankEmployee
18 years ago
The BIG-IP has two caching engines. One is the RamCache or FastCache. This is using memory to cache objects. The max memory that would be available for this is 3GB so it is very good for hot objects most likely in a reverse proxy scenario.

 

The BIG-IP Web Accelerator product and module for LTM support caching. The module running on LTM (6400 model and above) uses around 36GB of hard disk for caching. This supports static and dynamic caching. The BIG-IP Web Acccelerator stand-alone uses about 120GB of space for caching. The main reason that BIG-IP uses caching in any of these products is to speed up the delivery of content to users and offload the backend web servers. In most cases, they are used as reverse proxy caches, but the BIG-IP web accelerator can be used as a forward proxy as well.