Module 1

Service-to-Service Calls

3 articles

01Service-to-Service Calls with RestTemplate12 min read

02RestClient and Its Fluent API10 min read

03FeignClient: Declarative HTTP Calls12 min read

Module 2

Discovery & Load Balancing

2 articles

04Service Discovery with Eureka11 min read

05Client-Side Load Balancing9 min read

Module 3

Fault Tolerance

4 articles

06Fault Tolerance and the Rate Limiter11 min read

07The Bulkhead and the Time Limiter8 min read

08The Retry Pattern11 min read

09The Circuit Breaker8 min read

Module 4

API Gateway

2 articles

10API Gateway: Routing and Load Balancing6 min read

11API Gateway: Filters and Authentication9 min read

Module 5

Centralized Configuration

3 articles

12Centralized Configuration with Spring Cloud Config8 min read

13@RefreshScope: Reloading Configuration at Runtime7 min read

14Spring Cloud Bus9 min read

Module 6

Distributed Tracing

1 article

15Distributed Tracing with Micrometer and OpenTelemetry10 min read

Module 7

Distributed Logging

4 articles

16Logging Foundations: SLF4J, Logback and the Logger Hierarchy7 min read

17Logging Appenders: Console, File, Rolling and Custom8 min read

18Async Logging, Filters, Structured JSON and PII10 min read

19Distributed Logging: MDC, Correlation IDs and Trace IDs9 min read

Module 8

Distributed Scheduling

4 articles

20How Schedulers Work: ScheduledThreadPoolExecutor and Leader–Follower7 min read

21@Scheduled: Fixed Rate, Fixed Delay and Cron7 min read

22Scheduled Jobs: Common Pitfalls and Fixes13 min read

23ShedLock: Running a Job on Exactly One Instance9 min read