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zhangwenjian
ea2d807071
WithContextDb and the five CRUD actions passed the *gin.Context itself to GORM as the query's context. database/sql watches the context of a query that returns rows inside a transaction from a goroutine of its own, which can still read it after the handler returns - and gin hands that Context to the next request as soon as the handler returns. GORM wraps every write in a transaction, and an INSERT on SQLite or PostgreSQL returns the new key as a row, so any write raced with the next request's reset. The race detector reports it on the second of two sequential requests. They now pass c.Request.Context(), which belongs to one request only and is cancelled when its client goes away.