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Find Time-Consuming ActiveRecord Database Queries

January 07, 2019

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Quick solution to find slow sql (active record)
https://github.com/kirillshevch/query_track

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Async in Ruby

require " async " require " open-uri " require " httparty " require " redis " require " net/ssh " require " sequel " DB = Sequel .postgres Sequel .extension( : fiber_concurrency ) start = Time .now Async do |task| task.async do URI .open( " https://httpbin.org/delay/1.6 " ) end task.async do HTTParty .get( " https://httpbin.org/delay/1.6 " ) end task.async do Redis .new.blpop( " abc123 " , 2 ) end task.async do Net :: SSH .start( " 164.90.237.21 " ).exec!( " sleep 1 " ) end task.async do DB .run( " SELECT pg_sleep(2) " ) end task.async do sleep 2 end task.async do ` sleep 2 ` end end puts " Duration: #{ Time .now - start } " (C)

Start use Docker

I'am starting use Docker! Now I can run project on my Windows PC without Virtual Machine! The biggest issue was then I have ghost process with docker container. This commands will be helpful if you wont to rebuild all your containers more about Docker you can read: https://habrahabr.ru https://habrahabr.ru/ https://dou.ua/