Java Exception Handling & Retry Patterns (Resilience4j)
Introduction In modern distributed systems, failures are inevitable . Proper exception handling + retry mechanisms are essential to build resilient Java applications . This blog covers: Exception handling best practices Retry patterns using Resilience4j Spring Boot integration Production-ready resilience strategies 🧠 Exception Handling in Java (Best Practices) 🔹 Key Principles: Use specific exceptions (avoid generic Exception ) Never swallow exceptions (log properly) Use custom exceptions for business logic Separate technical vs business errors 👉 Proper exception handling ensures maintainability and system stability. ⚠️ Why Retry Patterns are Needed? In microservices: Network failures Temporary downtime Timeout issues 👉 These are often transient failures that can succeed on retry. 🔁 Retry Pattern (Concept) How it works: Call external service Failure occurs Retry triggered automatically Success OR fail after max attempts 👉 Retry improves reliability for temporary failure...