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@afair
afair / gist:3803895
Last active August 7, 2023 07:43
PostgreSQL and Pgpool Architecture

Hey! I saw this has been indexed by the search engines. It is a first draft of a post I ended up publishing on my blog at: Scaling PostgreSQL With Pgpool and PgBouncer

Thanks for stopping by!

PostgreSQL and Pgpool Architecture

@mateuszwenus
mateuszwenus / save_restore_dependencies.sql
Last active November 7, 2024 13:24
PostgreSQL: How to handle table and view dependencies
create table deps_saved_ddl
(
deps_id serial primary key,
deps_view_schema varchar(255),
deps_view_name varchar(255),
deps_ddl_to_run text
);
create or replace function deps_save_and_drop_dependencies(p_view_schema varchar, p_view_name varchar) returns void as
$$
@Zearin
Zearin / python_decorator_guide.md
Last active November 17, 2024 12:06
The best explanation of Python decorators I’ve ever seen. (An archived answer from StackOverflow.)

NOTE: This is a question I found on StackOverflow which I’ve archived here, because the answer is so effing phenomenal.


Q: How can I make a chain of function decorators in Python?


If you are not into long explanations, see [Paolo Bergantino’s answer][2].

@AntoineAugusti
AntoineAugusti / limitConcurrentGoroutines.go
Last active July 30, 2024 17:58
Limit the maximum number of goroutines running at the same time
package main
import (
"flag"
"fmt"
"time"
)
// Fake a long and difficult work.
func DoWork() {
@Faheetah
Faheetah / Jenkinsfile.groovy
Last active October 26, 2024 16:38
Jenkinsfile idiosynchrasies with escaping and quotes
node {
echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
echo 'No quotes, pipeline command in single quotes'
sh 'echo $BUILD_NUMBER' // 1
echo 'Double quotes are silently dropped'
sh 'echo "$BUILD_NUMBER"' // 1
echo 'Even escaped with a single backslash they are dropped'
sh 'echo \"$BUILD_NUMBER\"' // 1
echo 'Using two backslashes, the quotes are preserved'
sh 'echo \\"$BUILD_NUMBER\\"' // "1"
@evansde77
evansde77 / mock_requests.py
Last active November 1, 2024 13:38
Example of mocking requests calls
#!/usr/bin/env python
"""
mocking requests calls
"""
import mock
import unittest
import requests
from requests.exceptions import HTTPError
@BretFisher
BretFisher / docker-for-mac.md
Last active November 8, 2024 13:45
Getting a Shell in the Docker Desktop Mac VM

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1


@SheldonWangRJT
SheldonWangRJT / Convert .mov or .MP4 to .gif.md
Last active November 11, 2024 14:18
Convert Movie(.mov) file to Gif(.gif) file in one command line in Mac Terminal

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

@asukakenji
asukakenji / 0-go-os-arch.md
Last active November 18, 2024 21:59
Go (Golang) GOOS and GOARCH

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.17.1 darwin/amd64.

GOOS Values

GOOS Out of the Box
aix
android
@anvk
anvk / psql_useful_stat_queries.sql
Last active October 18, 2024 23:47
List of some useful Stat Queries for PSQL
--- PSQL queries which also duplicated from https://github.com/anvk/AwesomePSQLList/blob/master/README.md
--- some of them taken from https://www.slideshare.net/alexeylesovsky/deep-dive-into-postgresql-statistics-54594192
-- I'm not an expert in PSQL. Just a developer who is trying to accumulate useful stat queries which could potentially explain problems in your Postgres DB.
------------
-- Basics --
------------
-- Get indexes of tables