Andor

---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: prometheus-kafka-lagging
  labels:
    ksonnet.io/component: prometheus-rules
    prometheus: k8s
    role: alert-rules
  namespace: monitoring

bojand

Just documenting docs, articles, and discussion related to gRPC and load balancing.

https://github.com/grpc/grpc/blob/master/doc/load-balancing.md

Seems gRPC prefers thin client-side load balancing where a client gets a list of connected clients and a load balancing policy from a "load balancer" and then performs client-side load balancing based on the information. However, this could be useful for traditional load banaling approaches in clound deployments.

https://groups.google.com/forum/#!topic/grpc-io/8s7UHY_Q1po

gRPC "works" in AWS. That is, you can run gRPC services on EC2 nodes and have them connect to other nodes, and everything is fine. If you are using AWS for easy access to hardware then all is fine. What doesn't work is ELB (aka CLB), and ALBs. Neither of these support HTTP/2 (h2c) in a way that gRPC needs.

zmts

Про токены, JSON Web Tokens (JWT), аутентификацию и авторизацию. Token-Based Authentication

Last major update: 25.08.2020

• Что такое авторизация/аутентификация
• Где хранить токены
• Как ставить куки ?
• Процесс логина
• Процесс рефреш токенов
• Кража токенов/Механизм контроля токенов

valyala

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:

CMCDragonkai

Understanding the Memory Layout of Linux Executables

Required tools for playing around with memory:

• hexdump
• objdump
• readelf
• xxd
• gcore

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

danawoodman

WebSockets + Reflux + React

Using WebSockets, React and Reflux together can be a beautiful thing, but the intial setup can be a bit of a pain. The below examples attempt to offer one (arguably enjoyable) way to use these tools together.

Overview

This trifect works well if you think of things like so:

1. Reflux Store: The store fetches, updates and persists data. A store can be a list of items or a single item. Most of the times you reach for this.state in react should instead live within stores. Stores can listen to other stores as well as to events being fired.
2. Reflux Actions: Actions are triggered by components when the component wants to change the state of the store. A store listens to actions and can listen to more than one set of actions.

un1ko85

#! /bin/bash
MYSQL="/opt/local/etc/LaunchDaemons/org.macports.mysql5/mysql5.wrapper"
NGINX="/opt/local/sbin/nginx"
PHPFPM="/opt/local/sbin/php-fpm"
PIDPATH="/opt/local/var/run"
MEMCACHED="/opt/local/bin/memcached -m 24 -P /opt/local/var/run/memcached.pid -u root"

if [ $1 = "start" ]; then
    sudo $MYSQL start
    echo "Starting php-fpm ..."

mystix

VERSION=0.20.6

sudo apt-get update
sudo apt-get install openjdk-6-jdk

wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-$VERSION.deb
sudo dpkg -i elasticsearch-$VERSION.deb

# be sure you add "action.disable_delete_all_indices" : true to the config!!

prime31

function ValidateGooglePlaySignature( $responseData, $signature, $publicKey, &$status, &$response )
{
    $responseData = trim( $responseData );
    $signature = trim( $signature );
    $response = json_decode( $responseData );

    // Create an RSA key compatible with openssl_verify from our Google Play sig
    $key =    "-----BEGIN PUBLIC KEY-----\n".
    chunk_split($publicKey, 64,"\n").
    '-----END PUBLIC KEY-----';