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How We Pushed CDC into Postgres

  • Snowflake develops Postgres service to integrate transactional and analytical databases.
  • Push-based change data capture system decouples producer and consumer via object storage.
  • Four stages (decoder, capture, apply, failure handling) ensure reliable replication.

Why Is My SQL Query Slow Only in Production? (The Parameter Sniffing Trap)

It’s every developer's favorite Friday afternoon nightmare: A user complains that a feature in the app is hanging. You take the exact SQL query executed by the application, paste it into SQL Server…

  • Parameter sniffing causes slow SQL queries in production only
  • SQL Server compiles execution plan based on initial parameter values
  • Detect problematic plans using dynamic management view (DMV)

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