d nd2go

Test Database Setup

Container creation

Test database and user creation

MySQL
Postgres
Oracle
SQL Server

Deploying to Elastic Beanstalk via CircleCi 2.0

I got to here after spending hours trying to deploy to an Elastic Beanstalk instance via CircleCi 2.0 so I thought I'd write up what worked for me to hopefully help others. Shout out to RobertoSchneiders who's steps for getting it to work with CircleCi 1.0 were my starting point.

For the record, I'm not the most server-savvy of developers so there may be a better way of doing this.

Setup a user on AWS IAM to use for deployments

Add user here

How to create small, unique tokens in Ruby

That is is basically a "fork" of blog article i'm constantly returning to. It seems that the blog is down:

My choice: Dave Bass’s rand().to_s() trick

Dave Bass proposed this which I picked up for my implementation (here for an 8-chars token):

	import { Injectable } from '@angular/core';
	import { Observable, Observer, Subscription } from 'rxjs';



	@Injectable({
	providedIn: 'root'
	})
	export class AsyncApiCallHelperService {

	#
	# A:
	# pubsub = PgPubSub.new('channelname')
	# pubsub.subscribe do \|data\|
	# puts "data: #{data} is coming!"
	# end
	#
	# B:
	# pubsub = PgPubSub.new('channelname')
	# pubsub.publish("hello world")

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD