Career & Tech Guides

Spring Boot is the framework behind most modern Java backends -- here's what it actually does and why it exists.

Kafka shows up in almost every "scale to millions of events" system design discussion -- here's what it actually is.

"It works on my machine" is the problem Docker was built to solve.

Kubernetes is what runs containers at scale -- restarting them when they crash, spreading them across machines, and routing traffic to them.

Redis is the tool most systems reach for the moment a database query becomes too slow to run on every request.

Hibernate is what lets Java code work with database rows as ordinary objects, instead of hand-writing SQL for every query.

JPA is the standard Java specifies for object-relational mapping -- Hibernate is the tool that actually implements it.

REST is the architectural style behind most APIs you'll ever call -- here's what the term actually means.

GraphQL flips the usual API model: instead of the server deciding what a response contains, the client asks for exactly the fields it needs.

JWT is the most common way modern web apps prove "this request is from an already-logged-in user" without checking a database on every request.