Rapidity
Large Hadron Migrator
Rapidity | Large Hadron Migrator | |
---|---|---|
1 | 3 | |
4 | 1,819 | |
- | 0.4% | |
0.0 | 0.0 | |
about 1 year ago | 9 months ago | |
Ruby | Ruby | |
MIT License | BSD 3-clause "New" or "Revised" License |
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Rapidity
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Gem: Simple Redis-based Rate Limiter.
Source: https://github.com/RND-SOFT/rapidity
Large Hadron Migrator
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GitHub downtime root cause analysis
No you didn't. They're doing what is often referred as "online schema change" using https://github.com/github/gh-ost (but the concept is the same than percona's pt-online-schema-change, or https://github.com/soundcloud/lhm.
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Database... or Goose?
Is there anything similar for MySQL? There is https://github.com/soundcloud/lhm but it's pretty much outdated nowadays
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Do you use migrations for data manipulations? What are the pro's and con's ?
I may do it from the console or a task if I wanted to modify a large number of records, e.g. something in my Users table. I think you need a sense of how long the update will take - I'm not sure if there's any issue with migrations timing out or such like. If I modify my Users schema it takes 5 minutes or so as it has to make a copy of the table and swap it in and that works fine - https://github.com/soundcloud/lhm
What are some alternatives?
Seed dump - Rails 4/5 task to dump your data to db/seeds.rb
Squasher - Squasher - squash your old migrations in a single command
PgDice - Postgres partitioning built on top of https://github.com/ankane/pgslice
Lol DBA - lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed. Also, it can generate .sql migration scripts.
Nullalign - Finds missing non-null constraints
Foreigner - Adds foreign key helpers to migrations and correctly dumps foreign keys to schema.rb
online_migrations - Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).
BatchLoader - :zap: Powerful tool for avoiding N+1 DB or HTTP queries
Scenic - Versioned database views for Rails
PgHero - A performance dashboard for Postgres
Seedbank - Seedbank gives your seed data a little structure. Create seeds for each environment, share seeds between environments and specify dependencies to load your seeds in order. All nicely integrated with simple rake tasks.