discourse/script/redis_memory.rb
Sam Saffron 30990006a9 DEV: enable frozen string literal on all files
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.

Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
2019-05-13 09:31:32 +08:00

31 lines
628 B
Ruby

# frozen_string_literal: true
require File.expand_path("../../config/environment", __FILE__)
@redis = $redis.without_namespace
stats = {}
@redis.scan_each do |k|
type = @redis.type k
debug = @redis.debug :object, k
len = debug.split("serializedlength:")[1].to_i
case type
when "zset"
elems = @redis.zcard k
when "list"
elems = @redis.llen k
when "hash"
elems = @redis.hlen k
end
stats[k] = [len, type, elems]
end
puts "Top 100 keys"
stats.sort { |a, b| b[1][0] <=> a[1][0] }.first(50).each do |k, (len, type, elems)|
elems = " [#{elems}]" if elems
puts "#{k} #{type} #{len}#{elems}"
end