Lambda Architecture
Last Updated: May 26, 2026
Lambda Architecture combines batch and stream processing for the same data domain. It gives users fresh results now and corrected historical results later.
The trade-off is duplicated logic and duplicated systems. Modern streaming engines, lakehouse table formats, and replayable logs reduce the need for classic Lambda, but the freshness-versus-correctness trade-off still matters.
In this chapter, you will learn:
- What problem Lambda solves
- How batch, speed, and serving layers work
- Why dual logic creates operational risk
- When Lambda is still worth using