Category · 702 articles

Backend Engineering

Tuning HikariCP connection pools: lessons from production

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 049

Tuning HikariCP connection pools: lessons from production

Expona Admin · Oct 27, 2026 · 7 min read

Dynamic filters with JPA Specifications, explained simply

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 050

Dynamic filters with JPA Specifications, explained simply

Expona Admin · Oct 27, 2026 · 7 min read

Auditing with Spring Data JPA: best practices explained

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 051

Auditing with Spring Data JPA: best practices explained

Expona Admin · Oct 27, 2026 · 8 min read

OAuth2 login with Google in Spring Boot, explained simply

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 058

OAuth2 login with Google in Spring Boot, explained simply

Expona Admin · Oct 27, 2026 · 6 min read

Readable assertions with AssertJ: lessons from production

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 062

Readable assertions with AssertJ: lessons from production

Expona Admin · Oct 27, 2026 · 5 min read

Code coverage with JaCoCo: practical tips and trade-offs

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 068

Code coverage with JaCoCo: practical tips and trade-offs

Expona Admin · Oct 27, 2026 · 6 min read

Spring Boot microservices: when to split for production

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 071

Spring Boot microservices: when to split for production

Expona Admin · Oct 27, 2026 · 7 min read

Centralized config in Spring microservices: a deep dive

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 073

Centralized config in Spring microservices: a deep dive

Expona Admin · Oct 27, 2026 · 7 min read

Distributed tracing with Micrometer and OpenTelemetry

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 076

Distributed tracing with Micrometer and OpenTelemetry

Expona Admin · Oct 27, 2026 · 6 min read

Circuit breakers with Resilience4j in Java & Spring Boot

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 077

Circuit breakers with Resilience4j in Java & Spring Boot

Expona Admin · Oct 27, 2026 · 6 min read

Idempotent consumers in Java: what developers should know

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 079

Idempotent consumers in Java: what developers should know

Expona Admin · Oct 27, 2026 · 7 min read

Scheduled jobs in Spring Boot: best practices explained

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 080

Scheduled jobs in Spring Boot: best practices explained

Expona Admin · Oct 27, 2026 · 8 min read

GraalVM native images for Spring Boot: a practical guide

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 083

GraalVM native images for Spring Boot: a practical guide

Expona Admin · Oct 27, 2026 · 6 min read

Profiling Java with JDK Flight Recorder, explained simply

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 089

Profiling Java with JDK Flight Recorder, explained simply

Expona Admin · Oct 27, 2026 · 6 min read

Monitoring Spring Boot with Prometheus and Grafana explained

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 090

Monitoring Spring Boot with Prometheus and Grafana explained

Expona Admin · Oct 27, 2026 · 6 min read

Java interview questions: collections and concurrency

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 091

Java interview questions: collections and concurrency

Expona Admin · Oct 27, 2026 · 8 min read

Spring Boot interview questions: lessons from production

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 092

Spring Boot interview questions: lessons from production

Expona Admin · Oct 27, 2026 · 6 min read

Fixing 'No qualifying bean of type' in Spring explained

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 093

Fixing 'No qualifying bean of type' in Spring explained

Expona Admin · Oct 27, 2026 · 7 min read

Fixing LazyInitializationException in Java & Spring Boot

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 094

Fixing LazyInitializationException in Java & Spring Boot

Expona Admin · Oct 27, 2026 · 7 min read

Fixing circular dependencies in Spring, explained simply

JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 095

Fixing circular dependencies in Spring, explained simply

Expona Admin · Oct 27, 2026 · 7 min read