.tip

Mar 2, 2026 · one of the small things

rebase.autostash saves the stash dance

A rebase or a pull won't run on a dirty tree, so you stash, run it, pop, and one time in ten you forget the pop.

git config --global rebase.autostash true
git config --global pull.rebase true

With both set, git pull rebases your branch onto the remote and stashes and restores your local changes around it, all in one command.

git

~/tips/today — 2026-10-19

~cat tips/today

Never build an index on a live table without CONCURRENTLY

postgresqlmigrations

A plain CREATE INDEX takes a lock that blocks every write to the table for the whole build. On a big table that means minutes of outage that look like a hung app.

CREATE INDEX CONCURRENTLY orders_customer_idx ON orders (customer_id);

It's slower and can't run inside a transaction, so you'll have to tell your migration tool. If it fails halfway, it leaves an invalid index behind, so check pg_index.indisvalid and drop it before you retry.

↵ open y yesterday l ls /tips

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