Vikas Prabhu prabhuvikas

Reference - https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

Oracle RDS Data Dump with S3

Prerequisite for S3 Integration with RDS

Create a bucket in S3 your_oracle_dump_bucket of your choice. Make a note of this as this will be used for further policy creation.
Create policies and roles as mentioned using url
- Create policy
- Create role
Go to RDS>Database>{yourdatabase}>Connectivity and under Manage IAM roles select the role created above and select feature as S3_INTEGRATION and click Add role action
Create a option group RDS>Option Groups>Create Group or select existing option group and click Add Option. Select Option Name as S3_INTEGRATION parameter, Version as 1.0 , select Apply Immediately and click Add Option.
If a new option group is created then Modify the database and attach this option group and Apply immediately, wait for some time till the database becomes available.

virtualenv is a tool to create isolated Python environment

Install it via apt-get:

$ sudo apt-get install python3-venv

traverse to the project folder
create a virtual environment in current directory

$ virtualenv venv

generate 2048 bit size

openssl dhparam -out dhparam2048.pem 2048

use the following command to check an existing dhparams.pem file

openssl dhparam -inform PEM -in dhparam.pem -check -text

(Sample output)

Prerequisite

GIT is already installed
Already have a github account

SSH Key Generation

Create a ssh key using following command
If using windows then run commands in git bash

ssh-keygen -t rsa -C "[email protected]"

For those out there googling, this same erlang cookie error can happen when you are missing the HOME parameter from your environment configuration. For example, on the default ArchLinux installation of rabbitmq.

In this case, the service is started with systemctl start rabbitmq and it generates a cookie but the cli tools like rabbitmqctl status will not work out of the box because they do not know the home location.

default /etc/rabbitmq/rabbitmq-env.conf

NODENAME=rabbit NODE_IP_ADDRESS=0.0.0.0 NODE_PORT=5672

	const archiver = require('archiver');

	/**
	* @param {String} source
	* @param {String} out
	* @returns {Promise}
	*/
	function zipDirectory(source, out) {
	const archive = archiver('zip', { zlib: { level: 9 }});
	const stream = fs.createWriteStream(out);

	const archiver = require('archiver');

	/**
	* @param {String} source
	* @param {String} out
	* @returns {Promise}
	*/
	function zipDirectory(source, out) {
	const archive = archiver('zip', { zlib: { level: 9 }});
	const stream = fs.createWriteStream(out);