Cache: Enable compression by default for values > 1kB #31147
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jeremy
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Looks like you’ve got conflicts. Idea seems good. Any numbers you can share? This already being used across Basecamp? |
Compression has long been available, but opt-in and at a 16kB threshold. It wasn't enabled by default due to CPU cost. Today it's cheap and typical cache data is eminently compressible, such as HTML or JSON fragments. Compression dramatically reduces Memcached/Redis mem usage, which means the same cache servers can store more data, which means higher hit rates. To disable compression, pass `compress: false` to the initializer.
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Yup, for months now. Great results alongside cache key recycling. Together, these are crucial for a well-behaved Redis cache. Clear highlights: large drop in cache network bandwidth; large increase in # of active cache entries. We will be sharing more along with Rails 5.2 release. |
rafaelfranca
approved these changes
Nov 14, 2017
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Compression has long been available, but opt-in and at a 16kB threshold.
It wasn't enabled by default due to CPU cost. Today it's cheap and
typical cache data is eminently compressible, such as HTML or JSON
fragments.
Compression dramatically reduces Memcached/Redis mem usage, which means
the same cache servers can store more data, which means higher hit
rates.
To disable compression, pass
compress: falseto the initializer.