Spring Boot Tutorial 0/110 lessons ~6 min read Lesson 67“Production-grade backends”

Monolith vs Microservices

Monolith: one process, one DB, one deployment.

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Focus

2 guided sections

Practice signal

Concept-first lesson

Career prep

Foundation builder

Introduction

Monolith: one process, one DB, one deployment. Microservices: many processes, many DBs, many deployments. Both are valid — pick by team size and pain.

Syntax reference

Trade-offs in one picture:

bash

              Monolith                Microservices
Code locality   single repo               polyrepo / monorepo
Local dev       one mvn run               many services + docker-compose
Deploys         one big bang              N independent
Failure         all-or-nothing            isolated; cascades possible
Scaling         scale the whole app       scale hot service only
DB              shared schema             one DB per service
Latency         in-process method call    network hop (ms)
Best for        teams < 50, single domain teams > 50, multi-domain

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