Rails PG Extras
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Rails PG Extras | bullet | |
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11 | 27 | |
1,074 | 6,984 | |
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5.7 | 7.7 | |
2 months ago | 3 months ago | |
Ruby | Ruby | |
MIT License | MIT License |
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Rails PG Extras
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What are your favourite approaches to keeping on top of Postgres health?
I use either PgHero or Rails PG Extras on every project
- rails-pg-extras introduces new API for measuring SQL queries generated by any Ruby snippet
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Effective Queries with Rails and PostgreSQL
Your first impression may be that it's better to add indexes to every field in a database. However, first of all, only one of the defined indexes is working here (see the compound index section). Furthermore, indexes can slow down queries if there are not many records in the database, and each index takes up space in a computer's memory. Often, the size of the indexes may be larger than the amount of the data stored in a database. You can install the "rails-pg-extras" gem to get more information. I recommend that you carefully study the documentation of this gem, as it contains many useful functions that will make your work with the database as efficient as possible.
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Best way to learn query optimization?
https://github.com/pawurb/rails-pg-extras is useful for identifying slow queries and generally things that could make queries slow.
- rails-pg-extras: a new release adds built-in dashboard interface
- rails-pg-extras - new release adds 'table_info' and 'index_info' methods displaying summary of useful metadata
- rails-pg-extras: new release allows generating a healthcheck report of your PostgreSQL database
bullet
- What was the name of the gem that finds all unindexed foreign keys?
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Ban 1+N in Django
Rails has Bullet[0] to help identify and warn you against N+1
Does Django have anything active? Quick search revealed nplusone[1] but its been dead since 2018.
[0] https://github.com/flyerhzm/bullet
[1] https://github.com/jmcarp/nplusone
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Inherited rails app - what the hell are all these rack timeout lines in the log?
Without seeing more of the app, it's tough to say for certain, but one gem you might find helpful is the [bullet](https://github.com/flyerhzm/bullet) gem -- set this up in the app then start browsing around the app in development. If you have any N+1 queries or other minor optimizations that could be done it will inform you about them.
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A Guide to Memoization in Ruby
Getting rid of N+1 queries - This can help improve the speed of an app. The Bullet or Prosopite gems can give a lending hand here. The N+1 Dilemma — Bullet or Prosopite? entails a brief comparison of both.
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Understanding N and 1 queries problem
There's a Ruby gem called Bullet that identifies and warns developers about N+1 problems. You can also have it fail tests if detected.
I don't know if the approach is possible with every ORM or if it's just leveraging some Ruby perks, but I can't think of a good reason why you wouldn't use the equivalent everywhere.
https://github.com/flyerhzm/bullet
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Help with N+1 problem.
You might consider adding the bullet gem as a development requirement and see what it tells you, it's generally pretty good at spotting n-queries and letting you know how to fix them.
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Understanding and Fixing N+1 Query
As a Rails developer, recently I found Bullet [0] which helps massively in dealing with eager loading. For some reason I expected the framework to manage this sort of thing for me, even when Rails actually does a ton out of the box already. Only while refactoring I picked up on queries dragging performance. Oh well...
[0] https://github.com/flyerhzm/bullet
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How do you find the cause of slowness in your app?
This is good advice, it'll likely pick out some glaring issues right away. I would generally recommend looking at DB queries here too and recommend Bullet, but most software like DataDog, AppSignal etc will often also point N+1 and issues like it out.
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Yet Another Post About N + 1 Queries
In order to find all those N + 1 queries that are slowing down in your application, the community recommends using the Bullet gem.
- What are the main suspects in a really slow Rails app?
What are some alternatives?
Enumerize - Enumerated attributes with I18n and ActiveRecord/Mongoid support
prosopite - :mag: Rails N+1 queries auto-detection with zero false positives / false negatives
marginalia - Attach comments to ActiveRecord's SQL queries
rack-mini-profiler - Profiler for your development and production Ruby rack apps.
Apartment - Database multi-tenancy for Rack (and Rails) applications
Peek - Take a peek into your Rails applications.
Awesome Nested Set - An awesome replacement for acts_as_nested_set and better_nested_set.
Derailed Benchmarks - Go faster, off the Rails - Benchmarks for your whole Rails app
ActsAsList - An ActiveRecord plugin for managing lists.
benchmark-ips - Provides iteration per second benchmarking for Ruby
Audited - Audited (formerly acts_as_audited) is an ORM extension that logs all changes to your Rails models.
ruby-prof - A ruby profiler. See https://ruby-prof.github.io for more information.