Squashing Django Migrations

Monday, January 27, 2020

The Django migration system is great for modifying your database schema after a database is live. If you’re like me, you quickly end up with many 10s or 100s of migrations. There’s nothing inherently wrong with this, but there’s a few cases where it gets tiresome to …

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Cleanly removing a Django app (with models)

Thursday, January 23, 2020

While pruning features from our product it was necessary to fully remove some Django apps that had models in them. If the code is just removed than the tables (and some other references) will be left in the database.

After doing this a few times for work I came up …

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Using MySQL’s LOAD DATA with Django

Thursday, January 23, 2020

While attempting to improve performance of bulk inserting data into MySQL database my coworker came across the LOAD DATA SQL statement. It allows you to read data from a text file (in a comma separated variable-like format) and quickly insert it into a table. There’s two variations of it …

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Celery AMQP Backends

Friday, October 4, 2019

Note

This started as notes explaining the internals of how Celery’s AMQP backends operate. This isn’t meant to be a comparison or prove one is better or that one is broken. There just seemed to be a lack of documentation about the design and limitations of each backend …

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Celery without a Results Backend

Wednesday, July 17, 2019

The Celery send_task method allows you to invoke a task by name without importing it. [1] There is an undocumented [2] caveat to using send_task: it doesn’t have access to the configuration of the task (from when the task was created using the @task decorator).

Much of this configuration …

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