RubyConf 2019 - Parallel Ruby: Managing the Memory Monster by Kevin Miller
Parallel Ruby: Managing the Memory Monster by Kevin Miller
At Flexport, we process a lot of data. One sunny day, we decided to switch from a swarm of single-threaded Ruby processes to a wonderful new threadpool. Threads have way less overhead than processes, after all, so we could run far more. Fast forward a couple of hours and everything is on fire. Let’s talk about what went wrong, why it was the Ruby garbage collector's fault, and we did about it.
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