From 59c68c1a74d5398b9c31489744ff8eca82e2ce50 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
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 c820c553a..a2cf2565f 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