Hey, I'm new to Varnish.. We currenly have 4 simple caching balancers running squid+haproxy in front of some large webapps (2000 req/sec, 200Mbit), and I get the feeling we're growing out of Squid..
So I am investigating an in-place replacement of Squid by Varnish. The project looks really great, and the fact that the lead developer is such a FreeBSD guru is really comforting as well ;) And yes, the talk about the 1970's VAX machine approach to software architecture made a good point. I have some questions though. I am used to Squid's way of doing thing, so please forgive me if my questions are too biased to the squid-way of doing things. 1. What will happen when the dataset I want to pass through Varnish is much larger than the Varnish machines could store? I would expect the cache hit ratio to go down, and Varnish to start evicting objects from the cache more frequently. Or will Varnish just crash and burn with a 'cache is full' message? :) The reason I ask this, is we have balancers with 200GB of local storage, and the total amount of data that could be served could theoretically be several terabytes.. I think objects would expire before the cache is full, but just in case... 2. I run the varnishncsa daemon to write to logfile. However, I would really like to see some extra information like whether it was a cache hit or miss, and the last time to byte to the client in the logfile, like squid does in it's access.log. This is really really handy for post-mortem analysis. (We read everything into a database sometimes and let the dba's do their thing.) Is there any way to do this, or can you point me in the right direction? 3. I want to compare some headers, but I'm getting a compile error: Message from VCC-compiler: Expected CSTR got 'server.ip' (program line 266), at (input Line 1279 Pos 24) if (req.http.host == server.ip) { error 200 ok; } -----------------------#########-------------------- Running VCC-compiler failed, exit 1 VCL compilation failed I want to make sure that when I point my browser to http://w.x.y.z, I get a message "200 ok". Am I doing something wrong? I'm using Varnish-2.0.4 from ports by the way. 4. Is there some documentation on what the ReqEnd and StatSess values mean in the varnishlog output? The values seem interesting, but I have no idea what they are. -- With kind regards, Angelo Höngens systems administrator MCSE on Windows 2003 MCSE on Windows 2000 MS Small Business Specialist ------------------------------------------ NetMatch tourism internet software solutions Ringbaan Oost 2b 5013 CA Tilburg +31 (0)13 5811088 +31 (0)13 5821239 a.hong...@netmatch.nl www.netmatch.nl ------------------------------------------ _______________________________________________ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc