Software Engineering guide using Java as the Foundation.

Summary

Step 1: Know how to work with a PC to a basic extent

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Start with the fundamentails

Know what is an Object, and how it should be implemented

You should be able to model an object in a blue print

Comfortably run your code from the CMD

Know the difference between int and Integer, long, and Long

Understand what when to use linear, and non-linear data-strucutres

Deep dive into hashing, load factor, and collition

When and how to recurse is your best bet, so know if

Play with HashMap, TreeMap, HashSet, TreeSet, SinglyLinkedList, and DoubltLinkedList

Use this order: Step 2

Dive into unit testing via JUnit

Test coverage is important, so consider Jacoco

You will need external or third party dependency, so setup Maven on your machine

Use this order: Step 3

Concurrency is your friend, master it

Understand what is unsynchronized, synchronized, and asynchrnous processing

Be able to implement asnchronous components with your hand without any IDE

See what Runnable, Callable, and CompletableFuture can do for you

Deep dive into thread lifecycle

Use this order: Step 4

Play around with servlet, and build a toy project with it

Know what http headers are, and how they work

Avoid repetitive call, so understand what cookies, and caches are

You need a database, go for the simplest(MySQL)

Use this order: Step 5

With your hand, know how to create a database table

Database indexing is your best friend, know how it should be implemented, and the need for it

Joining works, understand {INNER JOIN, LEFT JOIN, RIGHT JOIN, OURTER JOIN}

Key is the foundation, know the difference between {Primary, Foreign, Unique, and Composite Keys}

It must be viewed, it it's too complex. Know to use {View} to simplify database complexity

Agrregate function is needed. Learn how they work, when and why it should be considered.

Use this order: Step 6

As it grows big, learn how to divide it into smaller chunks

Deep dive into microservice

You need an intermediary, so learn how to create an API gateway from scratch using Jakarta EE. Don't use Spring yet

When it's down, you wo't know, so learn how to implemente a service discovery from scratch

Use this order: Step 7

Your friends and family need to see it.

Start with a VPS server, and learn how to deploy your product

Anybody, and everybody shouldn't be able to access some resources, see how firewall rules can help

Use this order: Step 8

Your server is powerful beyond how you see it.

Figure out how to connect your server with Github, and how to have many of it running with just once code

Use this order: Step 9

Are you sure of where your users are coming from?

Learn about vertical and horizontal scaling

Use this order: Step 10

Your code would have grown big, see if SOAP or REST is your best bet

If it's not secure, it's not secure. You need to know if session based or token based authentication fit your needs

Use this order: Step 11

Does it stop working?

ping, and then telenet the ip and port

You want to have a good sleep, use ELK for logging

Find it useful? More is coming

How you should master it.