Tuan Anh Tran tuananh

Summary of the Node.js Board controversy from what I can gather.

All the redactions (and hidden/private conversations) has made it very hard for the outside to figure out what has occured.

Node.js Community Committee wanted Rod out:

nodejs/TSC#310
- https://web.archive.org/web/20170821212745/https://github.com/nodejs/TSC/issues/310 (early archive before redactions)
http://wayback.archive.org/web/20170825103107/https://github.com/nodejs/TSC/issues/310

##Installing a custom SSL cert on Unifi Controller

Requirements:

Domain certificate (*.crt)
Certificate key (*.key)
Intermediate certificate from CA (*.crt, *.pem)
Permissions to restart the unifi service
Debian or Ubuntu Unifi Controller installation

Redis 4.2 roadmap

Redis Cluster

Speed up key -> hashslot association. Now makes RBB loading 4x slower when there are many small keys.
Better multi data center story
redis-trib C coded and moved into redis-cli
Backup / Restore of Cluster
Non blocking MIGRATE (also consider not using 2X memory)
Faster resharding
Bug fixing and stress testing to bring it to next level of maturity

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Creating a redis Module in 15 lines of code!

A quick guide to write a very very simple "ECHO" style module to redis and load it. It's not really useful of course, but the idea is to illustrate how little boilerplate it takes.

Step 1: open your favorite editor and write/paste the following code in a file called module.c

#include "redismodule.h"
/* ECHO <string> - Echo back a string sent from the client */
int EchoCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {

	# Let's add a few entries in our stream "mystream". Every entry in a stream is like
	# an hash, composed of fields and values, but every entry can have different fields.
	# XADD appends a new entry in a stream, and returns an unique ID which is guaranteed
	# be incrementing.

	# The first part of the ID is the millisecond unixtime during the
	# addition (or the time of the last entry in the stream, if greater than the current time).
	# The second part of an entry is a 64 bit counter for entries added in the same ms.

	127.0.0.1:6379> XADD mystream name pamela nicknake kill-9

	if (!process.browser) var sodium = require('sodium-native')
	var blake2b = require('blake2b')
	var blake2bw = require('blake2b-wasm')
	var BLAKE2s = require('blake2s-js')
	var crypto = require('crypto')

	var DATA_64KB = Buffer.alloc(65536)
	var DATA_4KB = Buffer.alloc(4096)
	var DATA_128B = Buffer.alloc(128)

	# LVDB - LLOOGG Memory DB
	# Copyriht (C) 2009 Salvatore Sanfilippo <[email protected]>
	# All Rights Reserved

	# TODO
	# - cron with cleanup of timedout clients, automatic dump
	# - the dump should use array startsearch to write it line by line
	# and may just use gets to read element by element and load the whole state.
	# - 'help','stopserver','saveandstopserver','save','load','reset','keys' commands.
	# - ttl with milliseconds resolution 'ttl a 1000'. Check ttl in dump!

	(module
	(func $addTwo (param i32 i32) (result i32)
	(i32.add
	(get_local 0)
	(get_local 1)))
	(export "addTwo" (func $addTwo)))

	// GraphQL query that i'm trying to resolve with Dataloader but i can't find a way to pass argument to the
	// loader function.
	// The following GraphQL query should invoke the following DB round trips
	// 1 - Posts *
	// 2 - Tags limit 10 where post_id = ?
	// 3 - Tags limit 20 where post_id = ?
	query limitTagsOfThePost {
	posts {
	name