@yingjun
Yingjun Wu
@yingjun
Joined September 2024
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Yingjun Wu's blogs
Recently published
RisingWave vs Materialize: Performance Benchmark 2026
Apr 2 · 14 min read · Choosing between streaming databases is one of the most consequential infrastructure decisions a data engineering team makes. Get it wrong, and you are locked into a system that does not scale with your workload, burns through your cloud budget, or f...
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How to Build a Real-Time Fraud Detection System with Streaming SQL
Apr 2 · 11 min read · Fraud costs the global economy over $48 billion per year. Batch-based detection systems that run every hour or every night give fraudsters a massive head start. By the time your nightly ETL flags a stolen card, the damage is done. Real-time fraud det...
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Building a Real-Time Recommendation Engine with Streaming SQL
Apr 2 · 15 min read · Most recommendation engines run on batch pipelines. A nightly job crunches user activity logs, updates a model, and pushes new recommendations to a cache. By the time a user sees "Recommended for you," the data behind it is already stale. This matter...
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Real-Time IoT Data Processing: From Sensor to Dashboard in Minutes
Apr 2 · 11 min read · Your factory floor has 10,000 sensors generating temperature, humidity, and pressure readings every second. That is 600,000 data points per minute flowing into your system. A traditional batch pipeline processes this data on an hourly schedule, meani...
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