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@mckeed
mckeed / pre-commit
Last active January 24, 2025 17:47
Run rubocop on only staged files in git pre-commit
#!/bin/sh
STAGED_FILES=$(git diff-index HEAD --name-only --cached)
if [[ -z $STAGED_FILES ]]
then
exit # no staged files, no need to run rubocop
fi
# Checks if any staged files have unstaged changes
# otherwise rubocop isn't running on what is actually
@jjb
jjb / file.md
Last active April 28, 2025 03:04
Using Jemalloc 5 with Ruby.md

For years, people have been using jemalloc with ruby. There were various benchmarks and discussions. Legend had it that Jemalloc 5 didn't work as well as Jemalloc 3.

Then, one day, hope appeared on the horizon. @wjordan offered a config for Jemalloc 5.

Ubuntu/Debian

FROM ruby:3.1.2-bullseye
RUN apt-get update ; \
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active May 11, 2025 00:12
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'