What I learned this week - 22nd May 2023

• CockroachDB 

CockroachDB is a distributed SQL database that is designed to be scalable, reliable, and easy to use. It is a good choice for applications that need to be able to handle a large amount of data and traffic, and that need to be highly available.

Feature	CockroachDB	MySQL	PostgreSQL
Scalability	Horizontal	Vertical	Vertical
Availability	High	Medium	Medium
Consistency	Strong	Eventual	Eventual
SQL compatibility	Yes	Yes	Yes
Geo-replication	Yes	No	No

• FerretDB

FerretDB is an open-source, distributed, and scalable document database that is compatible with MongoDB. It is built on top of PostgreSQL and uses its query planner and execution engine. This makes it a good choice for developers who are familiar with MongoDB and want to use a more scalable and reliable database.

Feature	FerretDB	MongoDB	DocumentDB
Open source	Yes	No	No
Built on top of	PostgreSQL	MongoDB	.NET
Scalability	High	Medium	Medium
Reliability	High	Medium	Medium
Complexity	High	Medium	Medium

• System Design Concepts
• Scalability
• Availability
• Reliability
• Fault Tolerance
• Caching Strategies
• Load Balancing
• Sharding
• Difference Between API Gateway and Load Balancing
• AWS Private AppSync
• 30 Days React Challange
• ChatGPT websites
• https://www.roomgpt.io/dream
• SQL App
• https://www.sqltranslate.app/
• SpringBoot and ChatGPT
• https://betterprogramming.pub/integrating-chatgpt-and-whisper-apis-into-spring-boot-microservice-5545e2ea44fc
• Typescript
• Symbol - an immutable primitive datatype, introduced in ES6
• let symb = Symbol("keyName"); // create an unique object
• let mySymb = Symbol.for("keyName"); //create an unique object, but checks if key already exists
• let theSymbKey = Symbol.keyFor(mySymb); // gets key name