Tech Freedom Circle
Jul 15, 2025 · Databases
One‑Order Four‑Split: Solving MySQL Deadlocks in Million‑Row Imports
During massive daily imports of up to one million reconciliation records, MySQL deadlocks can cripple performance; this article dissects the four classic deadlock conditions, then presents a systematic “One‑Order Four‑Split” strategy—ordered writes, transaction splitting, index management, partitioning, and gap‑lock removal—backed by benchmarks, code samples, and configuration tweaks that cut lock rates by up to 90% and reduce batch times to under ten minutes.
Batch InsertDeadlockIndex Optimization
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