Nicholas Moore mnvx

Optimizing postgresql table for more than 100K inserts per second

Create UNLOGGED table. This reduces the amount of data written to persistent storage by up to 2x.
Set WITH (autovacuum_enabled=false) on the table. This saves CPU time and IO bandwidth on useless vacuuming of the table (since we never DELETE or UPDATE the table).
Insert rows with COPY FROM STDIN. This is the fastest possible approach to insert rows into table.
Minimize the number of indexes in the table, since they slow down inserts. Usually an index on time timestamp with time zone is enough.
Add synchronous_commit = off to postgresql.conf.
Use table inheritance for fast removal of old data:

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

The following is for the AOC 931sn.

Find the Recommended Resolution for your Display (on Manufacturer Website or similar)
Run the following in you shell
Press the "Auto Adjust" Button on your Display

	-- Create a group
	CREATE ROLE readaccess;

	-- Grant access to existing tables
	GRANT USAGE ON SCHEMA public TO readaccess;
	GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess;

	-- Grant access to future tables
	ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readaccess;

	#!/usr/bin/env python

	'''Using Webhook and self-signed certificate'''

	# This file is an annotated example of a webhook based bot for
	# telegram. It does not do anything useful, other than provide a quick
	# template for whipping up a testbot. Basically, fill in the CONFIG
	# section and run it.
	# Dependencies (use pip to install them):
	# - python-telegram-bot: https://github.com/leandrotoledo/python-telegram-bot

	class PreparaLeilaoAdmin(admin.ModelAdmin):
	model = Leilao
	extra = 0
	can_delete = False
	form = LeilaoForm

	def save_model(self, request, obj, form, change):
	super(PreparaLeilaoAdmin, self).save_model(request, obj, form, change)

	arquivo = form.cleaned_data.get('arquivo')

	from django.contrib.sites.models import Site


	class Object(object):
	def __init__(self, model, key):
	self.model = model
	self.key = key

	def __call__(self, args, *kwargs):
	params = {}

	#element:before {
	content: "";
	position: absolute;
	width: 0;
	height: 0;
	border-left: 16px solid transparent;
	border-right: 16px solid transparent;
	border-bottom: 16px solid #fff;
	top: -15px;
	left: 27px;