Your Coding Teacher

3 JavaScript interview questions How to know if the event.preventDefault() method was used in an element? What is async/await and how does it work? How to check if a value is an Array?

To access AWS, you can use: - the AWS Management Console (web app) - the AWS Command Line Interface (CLI) - the AWS Software Development Kits (SDKs) available for multiple programming languages

Ethereum is considered “the world computer.” Do you know what that means?

For software developers, one of the most important things you can do is writing code you can come back to later.

The systems you design follow the 2nd Law of Thermodynamics They'll grow more complex over time Strive for simplicity Otherwise, you're setting up yourself for failure

Although Ethereum and Bitcoin differ in their purpose, they have many elements in common: - Peer-to-peer network - Proof-of-Work for consensus - Digital signatures and hashes - Digital currency

"Watch what people do, not what they say" In the software development realm: "What people say" -> The comments "What people do" -> THE CODE Code never lies

I don’t see why developers make six figures, all they need to know is: - Linux - Bash - Go - Python - JavaScript and frameworks - Git - Docker - Kubernetes - Terraform - Distributed Systems - AWS - GCP - Prometheus - Grafana - Being On-call - Security

Amazon DynamoDB - Managed NoSQL database - Single-digit millisecond latency at any scale - Supports document and key/value schemas

"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies and the other way is to make it so complicated that there are no obvious deficiencies." —C.A.R. Hoare, The 1980 ACM Turing Award Lecture

AWS Storage Services - S3: general - Glacier: archiving & backup - EBS: block storage (disks) - Storage Gateway: connect on-premise with storage in AWS infrastructure

"In previous economic eras, businesses created value by moving atoms. Now they create value by moving bits." - @jsnover

AWS 101 AWS physical infrastructure is located in Regions: separate geographic areas. Each region has 2 o more isolated locations known as Availability Zones. By default, resources aren’t replicated across regions.

You: "I just coded a real masterpiece! Only I and God two know how it works." Also you, 3 months later: "Now only God knows."

CIA Triad - Confidentiality: only authorized users can access the data - Integrity: to prevent unauthorized modifications of data - Availability: to ensure authorized users can access resources when they need them The Pillars of Information Security

Relational Databases Available in AWS: - SQL Server - Oracle - MySQL Server - PostgreSQL - Aurora (proprietary) - MariaDB Which one is your favourite?

The worst mistake you can make is to equate years of experience with wisdom. There are people with 10 years of experience. And people who have experienced the same year ten times.

Coding is easy. Writing good code is hard.

The best developers follow a simple principle "Always Be Learning"

Stop starting. Start finishing.