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Projections

2 articles · Page 1 of 1
ZhiKe AI
ZhiKe AI
Jun 7, 2026 · Backend Development

Why Event Sourcing Rebuilds State from an Event Sequence

The article explains how Event Sourcing stores immutable, ordered events instead of the current state, details aggregate rehydration, snapshots, and projections, clarifies its orthogonal relationship with CQRS and DDD, and debunks four common misconceptions about the pattern.

CQRSDDDEvent Sourcing
0 likes · 13 min read
Why Event Sourcing Rebuilds State from an Event Sequence
ITPUB
ITPUB
Apr 8, 2022 · Big Data

How to Build a Billion-Scale Real-Time Data Warehouse with ClickHouse

This article explains how a large‑scale advertising platform replaced its slow offline data‑warehouse with a ClickHouse‑based real‑time warehouse, covering data source integration, performance comparison, materialized views, projections, schema management, and cost‑effective hot‑cold storage strategies.

ClickHouseKafka IntegrationMaterialized Views
0 likes · 19 min read
How to Build a Billion-Scale Real-Time Data Warehouse with ClickHouse