Lost in Translation:varnishlog, varnishtest(VUG7)Iwana Chan
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Shohei Tanaka of GREE, Inc. discusses their successful migration from a legacy system to a new system using Varnish without any downtime. They used varnishtest and tools like vtctrans and vsltrans to test VCL configurations and analyze logs. Libvarnishapi also allowed them to easily access log data and measure cache performance in more detail. Proper testing and measurement was essential to ensuring high performance and stability.