Advertising Systems
Advertising Event Data: Define the Contract Before Building the Pipeline
A duplicate click illustrates the decisions behind event grain, identity, time, versions, and data-quality acceptance criteria.
TECHNICAL SERIES
Advertising data, real-time systems, and tools that hold up in production.
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All articles →Flink
Real-Time Deduplication in Flink: State, Redis, or Bitmap?
Compare deduplication scope, recovery semantics, capacity, and the failure windows hidden inside three common approaches.
Databases & MySQL
MySQL Index Design: Reading EXPLAIN Through a Slow Query
Connect query shape, composite indexes, actual scan volume, and write costs through a practical event-log query.
Java
Java Thread-Pool Capacity: Keeping Backpressure Under Control
Use worker, queue, and rejection limits to control how bursts turn into latency and memory pressure, then validate overload behavior.
AI Agents
Operations Agents: Separate Diagnosis, Approval, and Execution
Design an auditable workflow for incident evidence, action plans, idempotent execution, and rollback verification.