Rendering and architecture · Comparison

Monolith vs microservices

One deployable application or many small ones. The choice is less about technology than about team size and how independently the parts of a product need to change.

2 options · 8 questions side by side · updated

CompareMonolithMicroservices
StructureOne codebase, one deploymentMany services, deployed separately
DatabaseUsually one shared databaseEach service owns its data
Calls between featuresFunction calls, fast and reliableNetwork calls that can fail
ScalingThe whole app scales togetherEach service scales on its own
Team fitOne team or a fewMany independent teams
OperationsSimple: one thing to monitorHeavy: tracing, orchestration, many pipelines
Cost to startLowHigh
Main riskTangled code as it growsDistributed complexity too early

How to choose between Monolith and Microservices

  • Start with a monolith, ideally a modular one with clear internal boundaries.
  • Split out a service when one part has clearly different scaling needs or a team needs to release on its own.
  • Move to microservices broadly only when team size, not technology, makes the monolith the bottleneck.

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