On 7/01/2012 4:25 p.m., Saiteja Peddinti wrote:
I had one confusion with store.log entries - Whenever a url is cached, does 
squid immediately write the object to disk and make a swapout entry in the 
store.log?

For my project I need to calculate MD5 hashes of url contents, for urls that 
are cached by squid. I was thinking of reading urls from store.log and querying 
them with my client. My client would then compute hash and store the results. 
Since I would make just one query for every cached url, I was assuming that the 
additional load might be less. Is there any other efficient way to achieve what 
I want to do?

I think you should contact Alex, (rousskov at measurement-factory.com) about the MD5 hashing. He has been working on a project to calculate and exchange object Digests for URL de-duplication on slow network links. It also requires this type of hash calculation and AFAIK he has already worked out how to do this efficiently inside Squid.

Amos

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