Explain the Strangler Fig pattern for migrating from a monolith to microservices. How would you apply it safely?

Problem Statement

Explanation

You place a routing layer in front of the monolith and peel off one capability at a time into a new service. The router sends only that capability’s traffic to the new service and keeps everything else on the monolith. Run shadow traffic and canaries before switching real users. Keep a rollback path and common auth, logging, and metrics across both worlds so issues are visible and reversible.

Code Solution

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Gateway routes /payments/* → PaymentsSvc; rest → monolith

Practice Sets

This question appears in the following practice sets:

Monolith vs Microservices

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Explain the Strangler Fig pattern for migrating from a monolith to microservices. How would you apply it safely?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which statement best describes the Single Responsibility Principle?

Open–Closed Principle encourages what practice when adding features?

High-Level Design (HLD) typically focuses on which artifacts?

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Which pairing describes a healthy design goal?

More from System Design

Master Interviews Anywhere, Anytime

Explain the Strangler Fig pattern for migrating from a monolith to microservices. How would you apply it safely?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which statement best describes the Single Responsibility Principle?

Open–Closed Principle encourages what practice when adding features?

High-Level Design (HLD) typically focuses on which artifacts?

Which UML diagram best captures interactions over time between components?

Which pairing describes a healthy design goal?

More from System Design

Master Interviews
Anywhere, Anytime