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# frozen_string_literal: true
# Usage: ruby spec/benchmarks/batching.rb
require 'benchmark/ips'
require_relative "../../lib/batch_loader"
require_relative "../fixtures/models"
User.save(id: 1)
def batch_loader
BatchLoader.for(1).batch do |ids, loader|
User.where(id: ids).each { |user| loader.call(user.id, user) }
end
end
batch_loader_with_cache = batch_loader
batch_loader_without_cache = BatchLoader.for(1).batch(cache: false) do |ids, loader|
User.where(id: ids).each { |user| loader.call(user.id, user) }
end
Benchmark.ips do |x|
x.config(time: 5, warmup: 0)
x.report("pure") { User.where(id: [1]).first.id }
x.report("already synced") { batch_loader_with_cache.id }
x.report("with cache") { batch_loader.id }
x.report("with purged cache") { batch_loader.id ; BatchLoader::Executor.clear_current }
x.report("without cache") { batch_loader_without_cache.id }
x.compare!
end
# Warming up --------------------------------------
# pure 1.000 i/100ms
# already synced 1.000 i/100ms
# with cache 1.000 i/100ms
# with purged cache 1.000 i/100ms
# without cache 1.000 i/100ms
# Calculating -------------------------------------
# pure 960.344k (±16.1%) i/s - 3.283M
# already synced 989.078k (± 9.0%) i/s - 3.200M
# with cache 8.400k (±20.1%) i/s - 39.442k in 4.982755s
# with purged cache 7.218k (±19.0%) i/s - 34.015k in 4.981920s
# without cache 76.683k (±19.5%) i/s - 345.987k in 4.874809s
# Comparison:
# already synced: 989077.6 i/s
# pure: 960343.8 i/s - same-ish: difference falls within error
# without cache: 76682.6 i/s - 12.90x slower
# with cache: 8399.6 i/s - 117.75x slower
# with purged cache: 7218.5 i/s - 137.02x slower
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