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Caching vs CDN

NodeJs/JavaScript

Cache(ElastiCache) Again caching is storing data that are frequently accessed into RAM so that t...

Updated 2 years ago by Tamarine

High Availability and Scalability: ELB & ASG

AWS Solution Architect Notes Ultimate AWS Certified Solutions Archit...

Scalability There are two type of scalability, vertical scalability and horizontal scalability. ...

Updated 2 years ago by Tamarine

EC2 Instance Storage

AWS Solution Architect Notes Ultimate AWS Certified Solutions Archit...

EBS Volume Elastic block store volume is a network drive that you can attach to your EC2 instanc...

Updated 2 years ago by Tamarine

EC2 Fundamentals

AWS Solution Architect Notes Ultimate AWS Certified Solutions Archit...

Setting up billing alert If you would like your IAM user to also be able to set up billing alert...

Updated 2 years ago by Tamarine

IAM & AWS CLI

AWS Solution Architect Notes Ultimate AWS Certified Solutions Archit...

IAM: users and groups Identity and access management, it is also a global service because it is ...

Updated 2 years ago by Tamarine

Packages, Crates, and Modules

Rust Rust Programming Language

Crate The smallest unit that the Rust compiler will work with. When you run rustc some_file.rs t...

Updated 2 years ago by Tamarine

Object reference vs pointer

C Notes

Pointer variable Let's start from the beginning, computer memory location are layered out in add...

Updated 2 years ago by Tamarine

Promises and promise chaining

NodeJs/JavaScript JavaScript Roadmap Journey

Time before promise, callbacks There are entities in JavaScript that let you schedule asynchrono...

Updated 2 years ago by Tamarine

Classes in JavaScript

NodeJs/JavaScript JavaScript Roadmap Journey

Class basic syntax Besides using a constructor function there is a more advance object oriented ...

Updated 2 years ago by Tamarine

All about prototypes

NodeJs/JavaScript JavaScript Roadmap Journey

Prototype inheritance Every object have a special hidden property [[Prototype]] it is either nul...

Updated 2 years ago by Tamarine

Miscellaneous function topics

NodeJs/JavaScript JavaScript Roadmap Journey

Rest parameters and spread syntax How do we make a function take in an arbitrary number of argum...

Updated 2 years ago by Tamarine

yaml and JSON

NodeJs/JavaScript

JSON Javascript object notation, is a serialization language that converts complicated objects l...

Updated 2 years ago by Tamarine

dumb-init for script

Docker

Problem So you got your command that you would like to run it using a docker container, problem ...

Updated 2 years ago by Tamarine

Quoting and Not Quoting Arguments

Bash Shell

Word splitting Bash shell and zsh shell will scan results of Parameter expansion: $PATH Comm...

Updated 2 years ago by Tamarine

exec form vs shell form

Docker

Command forms RUN, ENTRYPOINT, and CMD are all directives to run a command in your Dockerfile. A...

Updated 2 years ago by Tamarine

DynamoDB Simple

AWS Solution Architect Notes

Before We Begin AWS actually offers a local DynamoDB that you can set up and you can use theĀ --e...

Updated 2 years ago by Tamarine

DynamoDB Complex

AWS Solution Architect Notes

Creating Table with Composite Key To create a table with composite key, it is the same process, ...

Updated 2 years ago by Tamarine

make vs new

Go / Golang

Updated 2 years ago by Tamarine

Arry and Slices

Go / Golang Go with Examples

Array An array can be declared with the following syntax: var <arr_name> [length]type For exam...

Updated 2 years ago by Tamarine

Switch Statement

Go / Golang Go with Examples

Switch Statement Switch in Go is pretty nice, it function similar to the switch statement in C b...

Updated 2 years ago by Tamarine