add year end newsletter

_posts/2023-12-28-this-week-in-rails.markdown

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+---
+layout: post
+title: "This year in Rails, a summary of 2023"
+categories: news
+author: Greg
+og_image: assets/images/this-week-in-rails.png
+published: true
+date: 2023-12-29
+---
+
+This is Emmanuel, Greg, Vipul, Wojciech, and Zzak, bringing you the summary of what happened with Rails in the past year. It was a busy year with over [4300 commits](https://github.com/rails/rails/compare/@%7B2023-01-01%7D...main@%7B2023-12-31%7D) from [520 contributors](https://contributors.rubyonrails.org/contributors/in-time-window/20230101-20231231) and 23 releases, including Rails 7.1!
+
+We carefully selected the most significant pull requests for inclusion, but it is possible that we may have overlooked some due to the need to keep the newsletter concise.
+
+[Reflecting on 2023: Rails Foundation's Inaugural Year](https://rubyonrails.org/2023/12/27/reflecting-on-2023)  
+Amanda wrote a summary of what the Rails Foundation has been up to this year and what she is plannning for next year.
+
+[**Allow use of SSL-terminating reserve proxy that doesn't set headers**](https://github.com/rails/rails/pull/47139)  
+Add _ActionDispatch::AssumeSSL_ middleware that can be turned on via _config.assume\_ssl_. It makes the application believe that all requests are arriving over _SSL_. This is useful when proxying through a load balancer that terminates _SSL_, the forwarded request will appear as though it's _HTTP_ instead of _HTTPS_ to the application. This makes redirects and cookie security target _HTTP_ instead of _HTTPS_. This middleware makes the server assume that the proxy already terminated _SSL_, and that the request really is _HTTPS_.  
+
+[Add ActiveJob.perform_all_later to enqueue multiple jobs at once](https://github.com/rails/rails/pull/46603)  
+This adds the ability to bulk enqueue jobs, without running callbacks.
+This can greatly reduce the number of round-trips to the queue datastore. For queue adapters that do not implement the new `enqueue_all` method, we fall back to enqueuing jobs individually.
+
+[Implement Object#with](https://github.com/rails/rails/pull/46681)  
+This pull request adds `Object#with` to set and restore public attributes around a block:
+
+```ruby
+client.timeout # => 5
+client.with(timeout: 1) do
+  client.timeout # => 1
+end
+client.timeout # => 5
+```
+More examples and details about this change can be found on the pull request.
+
+[Introduce adapter for Trilogy](https://github.com/rails/rails/pull/47880)  
+Trilogy is a client library for MySQL-compatible database servers, designed for performance, flexibility, and ease of embedding.
+The [Trilogy database client](https://github.com/github/trilogy) and corresponding [Active Record adapter](https://github.com/github/activerecord-trilogy-adapter) were both open sourced by GitHub last year. 
+
+[Add ActiveSupport::MessagePack](https://github.com/rails/rails/pull/47770)  
+`ActiveSupport::MessagePack` is a serializer that integrates with the [`msgpack` gem](https://github.com/msgpack/msgpack-ruby) to serialize a variety of Ruby objects.
+Compared to `JSON` and `Marshal`, `ActiveSupport::MessagePack` can provide a performance improvement and message size reduction.
+
+[Introduce config.autoload_lib](https://github.com/rails/rails/pull/48572)  
+The new method `config.autoload_lib(ignore:)` provides a simple way to autoload from `lib` folder:
+
+ ```ruby
+ # config/application.rb
+ config.autoload_lib(ignore: %w(assets tasks))
+ ```
+
+Normally, the `lib` directory has subdirectories that should not be autoloaded or eager loaded. 
+This new method allows you to specify which subdirectories to be autoloaded as needed.
+
+Read more about this new feature in the  [autoloading guide](https://guides.rubyonrails.org/v7.1/autoloading_and_reloading_constants.html).
+
+[Active Job verbose logging](https://github.com/rails/rails/pull/47839)  
+A `verbose_enqueue_logs` configuration option is added to Active Job to display the caller of background job enqueue in the log to help with debugging.
+It is enabled in development only for new and upgraded applications. Not recommended for use in the production environment since it relies on Ruby's `Kernel#caller` which is fairly slow.
+
+[Add Bun support](https://github.com/rails/rails/pull/49241)  
+Bun is a new and viable alternative to the node.js runtime, yarn package manager, and esbuild bundler. Bun's primary differentiating characteristic is speed. It's often multiple times faster than node.js and friends.  
+Since most vanilla Rails projects are looking to simply sprinkle a little JavaScript here and there (but sometimes want a bit better more of the JavaScript ecosystem than the import-maps provide) Bun is a really good fit and can be easily adopted by new Rails projects.
+
+[Support filtering tests by line ranges](https://github.com/rails/rails/pull/48807)
+This change allows new syntax to filter tests by line ranges. For example, the following command runs tests from line 10 to 20.
+
+```ruby
+$ rails test test/models/user_test.rb:10-20
+```
+
+[Performance tune the SQLite3 adapter connection configuration](https://github.com/rails/rails/pull/49349)  
+For Rails applications, the Write-Ahead-Log in normal syncing mode with a capped journal size, a healthy shared memory buffer and a shared cache will perform, on average, 2× better.
+
+[Enable YJIT by default if running Ruby 3.3+](https://github.com/rails/rails/pull/49947)  
+There was many public reports of 15-25% latency improvements for Rails apps that did enable Ruby 3.2 YJIT, and in 3.3 it's even better.
+Following the [change](https://github.com/ruby/ruby/pull/8705), in Ruby 3.3 YJIT is paused instead of disabled by default, allowing us to enable it from an initializer.
+
+[Make the output of Active Records inspect configurable.](https://github.com/rails/rails/pull/49765)  
+One can use *attributes_for_inspect* method:
+```ruby
+Post.attributes_for_inspect = [:id, :title]
+Post.first.inspect #=> "#<Post id: 1, title: "Hello, World!">"
+```
+With the *attributes_for_inspect* set to _:all_, all record's attributes will be listed (default for development and test environment).
+One can also call *full_inspect* to get an inspection with all the attributes.
+
+[Rails 8 milestone](https://github.com/rails/rails/milestone/87)  
+This one is about what's ahead. DHH created a milestone for Rails 8 with very interesting issues. In my humble opinion, Rails 8 will be amazing.
+
+That's a wrap! Have a great New Year's Eve and see you next year!
+
+_[Subscribe](https://world.hey.com/this.week.in.rails) to get these updates mailed to you._