danielmai

Summary: Fio tests

r5.2xlarge

r5.2xlarge instance in eu-west-1 with 200 GB EBS io1 volume and 3000 IOPS.

MaZderMind

package de.mazdermind;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.SocketChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

jasonkeene

Go is an imperative, compiled, statically-typed, garbage-collected, concurrent, general purpose programming language. It emphasizes fast compilation, fast execution, and a conservative, simple language design.

What is Go good for?

Server Software

Go has modern, native implementations of many networking protocols.

iffy

python testsqlite.py 10000 :memory: 0
6.65568494797 seconds to do 10000 records db=:memory:, triggers=False
6.66251087189 seconds to do 10000 records db=:memory:, triggers=False
6.69321203232 seconds to do 10000 records db=:memory:, triggers=False

python testsqlite.py 10000 :memory: 1
6.76699709892 seconds to do 10000 records db=:memory:, triggers=True
6.82708096504 seconds to do 10000 records db=:memory:, triggers=True
6.82913088799 seconds to do 10000 records db=:memory:, triggers=True

vishnu-saini

Concurrency

Concurrent applications also make optimal use of the processors. But concurrent applications are difficult to develop, maintain, and debug. To develop thread-safe, high-performance, and scalable applications, Java’s low-level threading capabilities are insufficient.

Concurrent collection classes

The java.util.concurrent package includes a number of additions to the Java Collections Framework. These are most easily categorized by the collection interfaces provided:

• BlockingQueue defines a first-in-first-out data structure that blocks or times out when you attempt to add items to a full queue, or retrieve from an empty queue.

sudo-suhas

pprof

With a single import _ "net/http/pprof" you can add profiling endpoints to a HTTP server.

package main

import (
	"fmt"

BarDev

Create Kubernetes Cluster with KOPS using Gossip

See - Setup Minikube on Mac - by Wes Duff

https://github.com/wesleyduff/microservicesNode

Create Kops Credentials

aws iam create-group --group-name kops

aws iam attach-group-policy --group-name kops \

silkeh

package main

import (
	"encoding/json"
	"flag"
	"io/ioutil"
	"log"
	"net"
	"os"
	"os/signal"

nginx-gists

upstream warehouse_inventory {
    zone inventory_service 64k;
    server 10.0.0.1:80;
    server 10.0.0.2:80;
    server 10.0.0.3:80;
}

upstream warehouse_pricing {
    zone pricing_service 64k;
    server 10.0.0.7:80;

AntoineCheron

// Creating a Mono containing "Hello World !".
Mono<String> helloWorld = Mono.just("Hello World !");

// Creating an empty Mono
Mono<T> empty = Mono.empty();

// Creating a mono from a Callable
Mono<String> helloWorldCallable = Mono.fromCallable(() -> "Hello World !");
// Same with Java 8 method reference
Mono<User> user = Mono.fromCallable(UserService::fetchAnyUser);