Vishal Singh

[Vishal Singh @Vish_aal7]

@SumitM_X When you put pressure through the backside the load will start coming out.

[SumitM @SumitM_X]

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. RESTful API Design

6. Remote Procedure Call (gRPC, Thrift)

7. Message Queues (Kafka, RabbitMQ, JMS)

8. Java Concurrency (ExecutorService, CompletableFuture, ForkJoinPool)

9. Thread Safety and Synchronization

10. Java Memory Model

11. Distributed Databases (Cassandra, MongoDB, HBase)

12. Data Sharding and Partitioning

13. Caching Mechanisms & Patterns (Redis, Memcached, Cache-Aside, Write-Behind)

14. Zookeeper / etcd for Distributed Coordination

15. Consensus Algorithms (Paxos, Raft)

16. Distributed Locks (Zookeeper, Redis RedLock)

17. Spring Boot and Spring Cloud

18. Service Discovery (Consul, Eureka, Kubernetes DNS)

19. API Gateways (NGINX, Spring Cloud Gateway, Kong)

20. Inter-service Communication (REST, gRPC, GraphQL, Async Messaging)

21. Circuit Breakers and Retry Patterns (Resilience4j)

22. Load Balancing (NGINX, Kubernetes, Client-side LB)

23. Failover Mechanisms

24. Distributed Transactions (Saga, Outbox, 2PC)

25. Logging and Distributed Tracing (OpenTelemetry, Jaeger, Zipkin)

26. Monitoring and Metrics (Prometheus, Grafana, Micrometer)

27. Alerting Systems & Observability Practices

28. Authentication and Authorization (OAuth2, JWT, OIDC)

29. Encryption and Secure Communication (SSL/TLS, mTLS)

30. Rate Limiting and Throttling

31. Kafka Deep Dive (Exactly-once, Consumer Groups, Partitions)

32. In-memory Data Grids (Hazelcast, Infinispan)

33. Akka for Actor-based Concurrency

34. Event-Driven Architecture (Event Sourcing, CQRS)

35. Cluster Management with Kubernetes

36. Cloud-Native Development (12-factor apps, Sidecars, Service Mesh)

37. Serverless Computing (AWS Lambda concepts)

38. Distributed Data Processing (Apache Spark, Apache Flink)

39. API Schema & Contract Evolution (OpenAPI, backward compatibility)

40. JVM Tuning for Distributed Systems

[Mudit Jain @MuditJain_IN]

You're wrong...We are safe in India! 🇮🇳

[Vishal Singh @Vish_aal7]

@sreejayaa24 Is being an AOR a real deal?

[MASS @Freak4Salman]

every masterpiece has its cheap copy #King

[Gems @gemsofbabus_]

🚨 The Biggest problem in India right now is Corruption. From top Netas to senior Babus, from contractors to chaprasis — everyone has their cut and that’s why the country is in this condition.

[Manly Mentor @manly_mentor]

This video will change your life.. ‼️‼️

[Vishal Singh @Vish_aal7]

@Goathansera Bro has no Game knowledge. Sunny G was a different beast like how Sachin and Virat are for your information.

[Vishal Singh @Vish_aal7]

@ganeshsonawane Brisk walker from B'lore, WFH, so chappals are my daily wear. I cover long distances on rough footpaths, slopes, and traffic zones. Crocs peeled my feet, and my Nike sliders won’t last beyond a year. Would love to try Frido and share real feedback in 3–6 mnths.

[Vishal Singh @Vish_aal7]

@StocktwitsIndia Losing market share in a growing market is not a big deal

[Vishal Singh @Vish_aal7]

@kawal279 Hey, it's available everywhere in south India and you can also find it in Dmart. Their dairy products are top class. I would blindly choose it over Amul or other Dairy products.

[Neo Kim @systemdesignone]

If you want to become good at system design (not kidding), learn these case studies:

[Vishal Singh @Vish_aal7]

@Shonabubai @SinghPramod2784 @TimesAlgebraIND It only means the operator knew what was happening so he chanted alla hu akbar and yet he let Rishi bhatt merrily go on the ride.

[Vikas Dhayal @VikasDhayal18]

Update on the IPS trainee Rahul Balhara case, where he shattered a whiskey glass on my head:

The Hon’ble Judicial Magistrate heard our complaint for filing an FIR for 40 minutes and directed the Kapashera Police to submit an action taken report.

Next hearing: 16th January.

@ADV_ANSHUL_K and I hoping for an FIR soon.
#punish_rahulbalharaips

1/3

[Harsh Goenka @hvgoenka]

Our Country is a paradise- everything is perfect. No inflation, no unemployment, no global tensions. The real issues? Nehru, Emergency, Mughals, Partition, Sikh riots, Dr Ambedkar and Indus Valley Civilization’s urban planning flaws. Truly, we are in a golden era of priorities.

[SumitM @SumitM_X]

Do you think doing DSA in Java is all it takes to become a good backend developer?

That’s a nice start, but there’s a lot more to learn.

Learn these 30 topics before calling yourself a good Java backend developer 👇

1. Object-Oriented Programming (OOP) – Learn how to structure and organize your code using OOP principles.

2. Java Collections Framework – Understand how to manage and manipulate collections of data efficiently.

3. Exception Handling – Handle errors gracefully to make your application more robust.

4. Java Generics – Write reusable and type-safe code with generics.

5. Multithreading and Concurrency – Learn to manage multiple threads and handle parallel tasks safely.

6. Java Stream API – Process collections and data streams effectively using modern Java features.

7. Lambda Expressions – Simplify code by using concise lambda syntax.

8. Java 8+ Features – Stay updated with enhancements like functional programming, Optional, and more.

9. JVM Internals – Understand how the JVM works to optimize performance and troubleshoot issues.

10. Memory Management and Garbage Collection – Learn how memory is allocated and managed in Java.

11. Design Patterns – Apply common solutions to recurring design problems in software development.

12. RESTful APIs – Build and consume APIs that enable communication between systems.

13. JSON and XML Parsing – Work with different data formats for efficient data exchange.

14. Database Connectivity (JDBC) – Connect and interact with databases from Java applications.

15. Hibernate and JPA – Simplify database interactions and manage persistence with ORM tools.

16. Spring Framework – Use Spring for building scalable and maintainable applications.

17. Spring Boot – Simplify configuration and setup for Java applications.

18. Microservices Architecture – Learn to build small, independent services that work together.

19. Security Basics (JWT, OAuth) – Ensure secure access to your application and APIs.

20. Message Brokers (Kafka, RabbitMQ) – Use messaging systems to handle asynchronous communication.

21. API Gateways – Manage APIs effectively and improve scalability.

22. Distributed Systems – Understand the complexities of systems running across multiple nodes.

23. Caching (Redis, Ehcache) – Improve performance by reducing database dependency.

24. Unit Testing (JUnit) – Write tests to ensure code reliability and correctness.

25. Integration Testing – Verify the interaction between different components of your application.

26. Logging and Monitoring – Track application performance and diagnose issues effectively.

27. Docker and Kubernetes – Containerize applications and manage deployments.

28. CI/CD Pipelines – Automate testing and deployment processes for faster releases.

29. Cloud Services (AWS, Azure, GCP) – Deploy, scale, and manage applications on the cloud.

30. Performance Optimization – Identify and resolve bottlenecks to enhance application speed.

[Vishal Singh @Vish_aal7]

@Charviii__ @kunalkamra88 You fucking slave.

[Tech Fusionist @techyoutbe]

DevOps - Learning Plan 🔥✍️

[SumitM @SumitM_X]

Looking to master Multithreading and Concurrency in Java?

Go through these 39 Concepts 👇

What's your current score out of 39 ?

BASIC
____________

- Application, Process and Thread
- How to Create a Thread
- How to Join a Thread
- How to Interrupt a Thread
- Threads Synchronization
- Happens-before Relationship
- Locks Granularity
- Volatile Variables
- Atomic Variables
- Wait/Notify and the Producer-Consumer Pattern
- ThreadLocal Variables
- Race Condition
- Deadlock
- Starvation
- Livelock

ADVANCED
_____________

- Lock and ReentrantLock
- Read-Write Lock
- Condition Variables
- Semaphore
- CyclicBarrier and Parallel Sum
-CountDownLatch and Merge-Sort Algorithm
- Exchanger
- Phaser
-CopyOnWrite Collections
- NonBlocking Queues
- Blocking_Queues
- ConcurrentMap
- Map-Reduce Algorithm
- Executors
- Scheduled Tasks
- ThreadPoolExecutor and ThreadsFactory
- Fork-Join Pool
- CompletableFuture
- Parallel Streams
- Spinlock and Busy Wait
- Lockfree and Waitfree Algorithms
- Throughput and Latency in Concurrent Applications
- Profiling
- Microbenchmarks with JMH

[Csaba Kissi @csaba_kissi]

Git essentials