dim

[
  {
    "name": "Afghanistan",
    "alpha2": "AF",
    "alpha3": "AFG",
    "numeric": 4
  },
  {
    "name": "Albania",
    "alpha2": "AL",

dim

S2 Geometry Cell Sizes - http://s2geometry.io/

Script

package main

import (
	"flag"
	"fmt"

dim

export function sum(
  forSomeReasonThisIsAVeryLongVariableName1: number,
  forSomeReasonThisIsAVeryLongVariableName2: number,
): number {
  return (
    forSomeReasonThisIsAVeryLongVariableName1 +
    forSomeReasonThisIsAVeryLongVariableName2
  );
}

dim

default: bench

bench:
	go test -run=NONE -bench=. -benchmem

dim

/*

Benchmark_RWMutex-4            	100000000	        18.1 ns/op
Benchmark_Atomic-4             	200000000	         8.01 ns/op
Benchmark_RWMutex_parallel-4   	30000000	        46.7 ns/op
Benchmark_Atomic_parallel-4    	1000000000	         2.61 ns/op

*/
package main

dim

module RedisCluster
  def self.crc16(bytes)
    crc = 0
    bytes.each_byte{|b|
      crc = ((crc<<8) & 0xffff) ^ XMODEMCRC16Lookup[((crc>>8)^b) & 0xff]
    }
    crc
  end

  def self.slot(key)

dim

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

dim

 # "Performance Scalability of a Multi-Core Web Server", Nov 2007
 # Bryan Veal and Annie Foong, Intel Corporation, Page 4/10
 fs.file-max = 5000000
 net.core.netdev_max_backlog = 400000
 net.core.optmem_max = 10000000
 net.core.rmem_default = 10000000
 net.core.rmem_max = 10000000
 net.core.somaxconn = 100000
 net.core.wmem_default = 10000000
 net.core.wmem_max = 10000000

dim

{
"IAB1": "Arts & Entertainment",
"IAB1-1": "Books & Literature",
"IAB1-2": "Celebrity Fan/Gossip",
"IAB1-3": "Fine Art",
"IAB1-4": "Humor",
"IAB1-5": "Movies",
"IAB1-6": "Music",
"IAB1-7": "Television",
"IAB2": "Automotive",

dim

# Integration benchmark for redis BITPOS command

require 'redis'
require 'benchmark'

random = Random.new(1)
redis  = Redis.new timeout: 60
bitlen = 10_000
tmpkey = "__rb__bs__"
server = File.expand_path('../src/redis-server', __FILE__)