--- title: "Abhisek Panda (@PandaAbhisek) | Hashnode" description: "Backend Engineer. Read the latest articles by Abhisek Panda on Hashnode." url: "https://hashnode.com/@PandaAbhisek" --- @PandaAbhisek # Abhisek Panda @PandaAbhisek · Hyderabad, India · Joined May 2022 Backend Engineer [Website](https://abhisekpanda.co.in/) ### [Phase 3: Rate Limiting — Protecting Backend Services from Traffic Spikes](https://abhisekpanda.hashnode.dev/phase-3-rate-limiting-protecting-backend-services-from-traffic-spikes?utm_source=hashnode&utm_medium=feed) A Deep Dive into Token-Bucket Rate Limiting with Redis and Spring Cloud Gateway Introduction In Phase 2, we built a security pipeline — JWT authentication, API key authentication, RBAC, and request v 18 min read · [abhisekpanda.hashnode.dev](https://abhisekpanda.hashnode.dev/phase-3-rate-limiting-protecting-backend-services-from-traffic-spikes?utm_source=hashnode&utm_medium=feed) [Jul 27](https://hashnode.com/posts/phase-3-rate-limiting-protecting-backend-services-from-traffic-spikes/6a67ae653c8bda6394bca74b) ### [Phase 2: Securing the Gateway — JWT, API Keys, RBAC, and Request Validation](https://abhisekpanda.hashnode.dev/phase-2-securing-the-gateway-jwt-api-keys-rbac-and-request-validation?utm_source=hashnode&utm_medium=feed) A Deep Dive into Building a Production-Grade Security Layer for a Spring Cloud Gateway Introduction In Phase 1, we built the skeleton of Aegis Gateway — a reactive API gateway built on Spring Cloud G 37 min read · [abhisekpanda.hashnode.dev](https://abhisekpanda.hashnode.dev/phase-2-securing-the-gateway-jwt-api-keys-rbac-and-request-validation?utm_source=hashnode&utm_medium=feed) [Jul 20](https://hashnode.com/posts/phase-2-securing-the-gateway-jwt-api-keys-rbac-and-request-validation/6a5dfa85051448dff7097b26) ### [Building an API Gateway with Spring Cloud Gateway (Phase 1)](https://abhisekpanda.hashnode.dev/building-an-api-gateway-with-spring-cloud-gateway-phase-1?utm_source=hashnode&utm_medium=feed) Part 1: From Reverse Proxy to Smart Routing Series: Building Aegis Gateway with Spring Boot 4 & Spring Cloud GatewayPhase: 1 - Core GatewayDuration: 2 Days Introduction When people hear API Gateway 7 min read · [abhisekpanda.hashnode.dev](https://abhisekpanda.hashnode.dev/building-an-api-gateway-with-spring-cloud-gateway-phase-1?utm_source=hashnode&utm_medium=feed) [Jul 16](https://hashnode.com/posts/building-an-api-gateway-with-spring-cloud-gateway-phase-1/6a590207577bb0a664d9cabb) ### [Building Aegis Gateway: A Production-Ready API Gateway with Spring Boot](https://abhisekpanda.hashnode.dev/building-aegis-gateway-a-production-ready-api-gateway-with-spring-boot?utm_source=hashnode&utm_medium=feed) A backend engineering series where we build a production-inspired API Gateway from scratch. Over the past few months, I've been building increasingly complex backend systems. The journey started with 5 min read · [abhisekpanda.hashnode.dev](https://abhisekpanda.hashnode.dev/building-aegis-gateway-a-production-ready-api-gateway-with-spring-boot?utm_source=hashnode&utm_medium=feed) [Jul 14](https://hashnode.com/posts/building-aegis-gateway-a-production-ready-api-gateway-with-spring-boot/6a56847c5868d124134fee19) ### [Building an Observable Agentic RAG with LangGraph: Week 6 of SentinelRAG](https://abhisekpanda.hashnode.dev/building-an-observable-agentic-rag-with-langgraph-week-6-of-sentinelrag?utm_source=hashnode&utm_medium=feed) Agentic RAG system using LangGraph, FastAPI, LangSmith, structured logging, execution tracing, token tracking, and graph visualization. 6 min read · [abhisekpanda.hashnode.dev](https://abhisekpanda.hashnode.dev/building-an-observable-agentic-rag-with-langgraph-week-6-of-sentinelrag?utm_source=hashnode&utm_medium=feed) [Jul 11](https://hashnode.com/posts/building-an-observable-agentic-rag-with-langgraph-week-6-of-sentinelrag/6a52562213dac79ffc05cd8d)