Discussion

Deleting browser cache

Hi,

Sometimes the machine becomes really slow and pega server might be also slow at that time and users of our application experience some unexpected errors, which in general should not occur. I usually clear browser's cache (which I have learnt at my tenure at virtusa) from my own machine twice a week (whenever my machine hangs up or becomes too slow)and generally never experience all of these unexpected error in my machine. In some pdn document I also came to know that in pegaRules.xml it is mentioned that the cache on client's machine should be refreshed in every 24 hours. So, we are going to request users to at leat clear their own browser's cache once in a week. Is there any problem in it?

Thanks,
Usoshi

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Pega
July 27, 2009 - 1:05pm

Hi, I am not aware of any requirement to clear client cache except following a PRPC version upgrade pre- version 5.4. Starting with PRPC release 5.4 most static content references are rendered using the static JSP tag. The static JSP adds a unique hash postfix to JavaScript and css file references. The unique hash is regenerated when the Rule-File-Text rule is modified or the server static content file cache is cleared. This facility greatly improves upon the timeout based static content refresh mechanism. A PRPC developer using many different RuleSet lists may benefit from occasionally clearing client cache to recover disk space since hash generation is tied to each unique RuleSet lists. Most end users access applications that operate with a fixed RuleSet lists and will consume minimal local disk space.

Other possible causes:
- Server disk or memory constraints
- Browser memory leaks.
- Browser plug-ins (Skype mastermind is a good example)
- Most browsers leak small amounts of memory that may cause
performance issues for long lived, high volume client
sessions on low power, limited memory client PCs.

Tim Martel
Director - BPM Development

July 27, 2009 - 6:06pm

Hi Martt,

Thanks for your confirmation. In our application, we have multiple rulesets and development is still going on. We are putting new patches once in every month. In this case, do you think, deleting cache files can improve the performance of the end users or make the unexpected errors a bit less? Ours is PRPC version 5.3 and the database is SQL server.

Thanks,
Usoshi

September 25, 2014 - 5:33am

can you please tell me how to clear cache.

September 25, 2014 - 5:33am

can you please tell me how to clear cache.

September 25, 2014 - 5:33am

can you please tell me how to clear cache.

October 7, 2015 - 3:09am

Hi All,

Any one help me how to clear cache.

Pega
October 7, 2015 - 9:57am

Does https://kb.iu.edu/d/ahic link help?