From 59c68c1a74d5398b9c31489744ff8eca82e2ce50 Mon Sep 17 00:00:00 2001 From: Eugen Rochko Date: Sun, 19 Aug 2018 03:50:34 +0200 Subject: [PATCH] Reduce user active duration from 7 days to 2 days (#8282) To minimize fanout work and redis home feed storage space when there are lots of recent sign-ups --- app/models/user.rb | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/app/models/user.rb b/app/models/user.rb index c820c553a7f..a2cf2565fd5 100644 --- a/app/models/user.rb +++ b/app/models/user.rb @@ -42,7 +42,14 @@ class User < ApplicationRecord include Settings::Extend include Omniauthable - ACTIVE_DURATION = 7.days + # The home and list feeds will be stored in Redis for this amount + # of time, and status fan-out to followers will include only people + # within this time frame. Lowering the duration may improve performance + # if lots of people sign up, but not a lot of them check their feed + # every day. Raising the duration reduces the amount of expensive + # RegenerationWorker jobs that need to be run when those people come + # to check their feed + ACTIVE_DURATION = ENV.fetch('USER_ACTIVE_DAYS', 7).to_i.days devise :two_factor_authenticatable, otp_secret_encryption_key: Rails.configuration.x.otp_secret