Commits on Nov 29, 2022

1. Proof of Concept: Automatically store strings as raw …

   When a value is already a String, there is little point using Marshal
   to serialize it. The only benefit is to properly presserve the String
   encoding, but this can instead be stored as a bitflag on the key.
   
   On a simple benchmark reading a 1MB UTF-8 string, it's about twice faster.
   
   ```ruby
   
   require 'bundler/inline'
   
   gemfile do
     source "https://rubygems.org"
     gem "dalli"
     gem "benchmark-ips"
   end
   
   require "dalli"
   require "benchmark/ips"
   
   client = Dalli::Client.new("localhost", compress: false)
   payload = "B" * 1_000_000
   client.set("key", payload)
   Benchmark.ips do |x|
     x.report("get 1MB UTF-8") { client.get("key") }
   end
   ```
   
   ```
   $ ruby /tmp/benchmark-dalli.rb
   Warming up --------------------------------------
          get 1MB UTF-8   156.000  i/100ms
   Calculating -------------------------------------
          get 1MB UTF-8      1.582k (± 2.7%) i/s -      7.956k in   5.031764s
   $ ruby -Ilib /tmp/benchmark-dalli.rb
   Warming up --------------------------------------
          get 1MB UTF-8   280.000  i/100ms
   Calculating -------------------------------------
          get 1MB UTF-8      2.798k (± 4.3%) i/s -     14.000k in   5.012061s
   ```
   
   This is inspired by my work on our in-house serializer library:
   Shopify/paquito#20

   

   byroot committed Nov 29, 2022
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