Strangler Fig Pattern

<aside> 📚 📁 Category: Patterns

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Overview

Strangler Fig Pattern gradually migrates legacy systems by incrementally replacing functionality. The new system grows around the old one until complete replacement.

<aside> ℹ️ Why It Matters: Understanding Strangler Fig Pattern is essential for building robust, scalable, and secure modern applications.

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Key Concepts

[x] Incremental Migration - Step by step
[x] Facade Layer - Route between systems
[x] Feature Toggles - Gradual rollout
[x] Data Synchronization - Keep data consistent
[x] Parallel Running - Both systems active
[x] Rollback Capability - Safety net
[x] Decommissioning - Remove old parts
[x] Risk Mitigation - Phased approach

Common Use Cases

<aside> 💡 Where to Apply Strangler Fig Pattern

                        Monolith to microservices
                        Legacy modernization
                        Technology stack upgrades
                        Database migration
                        Platform re-architecture
                        Cloud migration

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Best Practices

[x] Start with low-risk components
[x] Implement robust routing
[x] Maintain data consistency
[x] Use feature flags