Large Hadron Migrator
Lol DBA
| Large Hadron Migrator | Lol DBA | |
|---|---|---|
| 3 | 2 | |
| 1,833 | 1,587 | |
| 0.0% | 0.1% | |
| 0.0 | 0.0 | |
| over 1 year ago | 11 months ago | |
| Ruby | Ruby | |
| BSD 3-clause "New" or "Revised" License | MIT License |
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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 There is https://github.com/soundcloud/lhm but it's pretty much outdated nowadays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
Lol DBA
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Must-have gems for mature Rails
gem "lol_dba" - https://github.com/plentz/lol_dba | Inspect the state of table indexes.
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Rails application boilerplate for fast MVP development
lol_dba for indexing
What are some alternatives?
PgDriveBackup - Simple solution to make encrypted with ccrypt PostgreSQL backups and storing on Google Drive API
Scenic - Versioned database views for Rails
Foreigner - Adds foreign key helpers to migrations and correctly dumps foreign keys to schema.rb
PgHero - A performance dashboard for Postgres
BatchLoader - :zap: Powerful tool for avoiding N+1 DB or HTTP queries
Rails DB - Rails Database Viewer and SQL Query Runner
Upsert - Upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates functions (UDF) for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.
Squasher - Squasher - squash your old migrations in a single command
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.
SchemaPlus - SchemaPlus provides a collection of enhancements and extensions to ActiveRecord