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Previously entries which were accessed only 1 time weren't cached. It has been appeared that some rarely executed heavy queries may read indexdb block twice in a row instead of once. There is no need in caching such a block then. This change should eliminate cache size spikes for indexdb/dataBlocks when such heavy queries are executed. Expose -blockcache.missesBeforeCaching command-line flag, which can be used for fine-tuning the number of cache misses needed before storing the block in the caching. |
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blockcache_test.go | ||
blockcache_timing_test.go | ||
blockcache.go |