Database shrading and database partitioning in Rails sharding

Database shrading and database partitioning in Rails

Database sharding in Rails step by step: create a separate database per shard, wire them up in database.yml, and query across them. Plus how sharding differs from partitioning, with a native PostgreSQL partitioning example done through Rails migrations.

May 15, 2023

Ruby in browser via WebAssembly ruby

Ruby in browser via WebAssembly

Ruby 3.2 runs in the browser through WebAssembly: embed Ruby in a script tag with ruby-wasm-wasi or drive the Ruby VM from JavaScript and mix it with HTML. Working examples plus honest limits: no threading or networking, and no extra gems without a custom wasm image.

Mar 20, 2023

Solutions for const and enums per class in Ruby

Solutions for const and enums per class in Ruby

Three ways to define constants and enums per class in Ruby: the ActiveRecord enum macro, a mixed style combining frozen constants with enum, and a dependency-free PORO version. Code for each solution and a comparison to help you pick the right one.

Factory Pattern with auto-detecting classes in Ruby

Factory Pattern with auto-detecting classes in Ruby

The Factory Pattern in Ruby, then a step further: using naming conventions and regular expressions so the factory auto-detects which notification class to instantiate. Complete code for both versions, plus when strict class listing is the safer choice.

Anonymous Arguments Passing Improvements in Ruby 3.2

Anonymous Arguments Passing Improvements in Ruby 3.2

Ruby 3.2 adds new syntax for anonymous arguments: forward positional and keyword arguments with bare * and ** and unpack them inside the method, no more digging through kwargs hashes. A before-and-after example shows how much cleaner argument passing gets.