Tejinder

[Tejinder @tejinder456]

@SumitM_X 401 Unauthorized means you need to log in/authenticate (missing or bad ID), while 403 Forbidden means you are logged in but lack permission/rights to that specific resource.
401 - Means Authentication
403 - Means Authorization

[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

[Tejinder @tejinder456]

@thdxr This is fantatstic. I ll definitely give it a try

[Tejinder @tejinder456]

@ShrutiTrip86844 remote

[Tejinder @tejinder456]

@kamran4300 Remote

[Tejinder @tejinder456]

@ItsjustAwan AI

[Tejinder @tejinder456]

@TowardsAws Use GraalVM to reduce the Lamda ColdStart time

[Tejinder @tejinder456]

8 Tips for Building Scalable and Maintainable Software Systems https://t.co/n3gArdj5kJ

[Boris | Tech Connoisseur @iamtechonda]

If you like this, RT the top tweet ♻️

Would help a lot to ❤️

And feel free to follow me at @iamtechonda for more like this

[Tejinder @tejinder456]

@rafrasenberg It works

[Tejinder @tejinder456]

@JoshBurnsTech @JoshBurnsTech what did you do for generating passive income ?

[Raman Sekhon @RamanPsekhon]

ਮੈਨੂੰ ਸਸਤੇ ਜਿਹੇ ਬਜ਼ਾਰ
ਬੜੇ ਸੋਹਣੇ ਲਗਦੇ ਨੇ,
ਕਿ ਉਸ ਚ ਹਰ ਆਮ
ਚਹਿਰਾ ਮੈਨੂੰ ਖੁਸ਼ ਨਜ਼ਰ ਆਓਂਦਾ ਹੈ।
#FarmersProtest

[Tejinder @tejinder456]

@JoshBurnsTech Congrats josh !!

[Tejinder @tejinder456]

Hiring for senior Java Developer https://t.co/MufhrIbJyB #javadeveloper #javaprogramming

[.. @Sandhu94717]

जिन कश्मीरी पण्डितों के नाम पर हर सरकार ने वोट बटोरे उनके विचार भी जान लो किसान और सिखों के बारे में........
#ReleaseDetainedFarmers
#FarmersProtests

[UN Human Rights @UNHumanRights]

#India: We call on the authorities and protesters to exercise maximum restraint in ongoing #FarmersProtests. The rights to peaceful assembly & expression should be protected both offline & online. It's crucial to find equitable solutions with due respect to #HumanRights for all.

[Tejinder @tejinder456]

#farmerprotest

[Rupi @rupimavi]

क्या आप तो नहीं बदल गए ?

#PeacefulProtestContinues #farmersprotests

[Jassi @JJassiOfficial]

Jhandde taan pehlan hi jhoolde sii saade assin Lal Qile kyun jana, Yeh Dekho Gaddaro logon ke dil ka dukh,

[Tejinder @tejinder456]

My course completion certificate for "Build a Serverless App with AWS Lambda - Hands On!" https://t.co/RIWM9mGbgh via @udemy