JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 005
Java collections: choosing List, Set and Map in practice
Expona Admin · Oct 27, 2026 · 8 min read
Tag · 772 articles · 1 interview series
#Performance
Practical Performance articles, guides and code examples from the Expona engineering blog.
Articles
772 articles
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 012
Immutability in Java: a practical Java & Spring Boot guide
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 016
JVM memory explained: heap, stack and metaspace explained
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 017
G1 vs ZGC: choosing a garbage collector, explained simply
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 019
Java interview questions: strings and memory in practice
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 026
Spring Boot configuration and profiles, explained simply
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 027
@ConfigurationProperties for typed config for production
Expona Admin · Oct 27, 2026 · 5 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 028
Spring Boot validation with Bean Validation: a deep dive
Expona Admin · Oct 27, 2026 · 9 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 029
Global error handling with @RestControllerAdvice explained
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 030
ResponseEntity and HTTP status codes: a practical guide
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 032
Mapping DTOs with MapStruct: what developers should know
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 035
Faster feedback with Spring Boot DevTools for production
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 042
JPA entities and relationships: best practices explained
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 043
Hibernate N+1 query problem: how to fix it — a deep dive
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 047
Optimistic locking with @Version: lessons from production
Expona Admin · Oct 27, 2026 · 9 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 049
Tuning HikariCP connection pools: lessons from production
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 052
Caching with @Cacheable and Redis in Java & Spring Boot
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 059
Spring Boot as an OAuth2 resource server for production
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 061
Unit testing with JUnit 5 and Mockito: a practical guide
Expona Admin · Oct 27, 2026 · 5 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 064
Repository tests with @DataJpaTest and Testcontainers
Expona Admin · Oct 27, 2026 · 7 min read