JadeX @JAXRS3
Tech savvy , learner Joined September 2020-
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That iconic moment when CJI got nearly hit by a shoe! I condemn this, you RT and condemn it too!
One of the most asked Java/backend interview questions in an interview ⇒The N+1 Problem in JPA → 1 initial query: To fetch N parent entities. → N subsequent queries: For each of the N parent entities, a separate query is executed to fetch its related children. → Results in…
I often get asked - "How much database knowledge is enough for a backend developer?" If you're a backend developer looking to learn databases. Learn these 25 topics👇 1. Basic Queries: SELECT, INSERT, UPDATE, DELETE 2. Joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN 3.…
As a senior Java backend developer, It will be good if you have an understanding of the below 40 topics👇 1. CAP Theorem 2. Consistency Models 3. Distributed System Architectures 4. Socket Programming (TCP/IP and UDP) 5. HTTP and RESTful APIs 6. Remote Procedure Call (RPC) -…
Before going for a Java Microservices Interview, please make sure you understand below terms : Service Registry API Gateway Circuit Breaker Load Balancer Event Bus / Message Broker Sagas CQRS (Command Query Responsibility Segregation) Database per Service Service Discovery…
the type of men that women love…
bored? build your own git: wyag.thb.lt build your own database: build-your-own.org/database/ build your own redis: build-redis-from-scratch.dev/en/introduction build your own neural networks: sausheong.github.io/posts/how-to-b… build your own os: youtube.com/watch?v=ZjwvMc… I can keep going....
Bit Manipulation- Optimize Code with Bitwise Operations: Bit manipulation is a powerful technique in C that uses bitwise operators (&, |, ^, ~, <<, >>) to perform low-level operations like setting, clearing, or toggling bits. It’s widely used in embedded systems, flags, masks,…
When you have just one DB, Spring Boot auto-wires everything for you DataSource, JdbcTemplate, EntityManagerFactory, etc. But when you bring in two DBs, Spring Boot doesn’t know which one to pick as the default. That’s why auto-config stops working and you need to explicitly…
Technical Round cleared 🥳🥳 What was asked: DSA : Medium - Longest Common Substring Database: Queries on the ER diagram from the previous round (majorly joins) How to design a HashSet and its time complexity and space complexity On to the next one 🚀
Java Dynamic Proxies: Runtime Implementation of Interfaces: Dynamic Proxies in Java allow you to create objects at runtime that implement interfaces without writing their actual implementation. This is heavily used in frameworks like Spring (for AOP, transactions) and Hibernate…
Make sure you understand this. There is a high chance this will be discussed in the interviews.

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