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Add Index on litemall_coupon.code to Accelerate Query #333

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wtune opened this issue Jan 9, 2020 · 0 comments
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Add Index on litemall_coupon.code to Accelerate Query #333

wtune opened this issue Jan 9, 2020 · 0 comments

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@wtune
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wtune commented Jan 9, 2020

Missing index on table litemall_coupon column code might make the underlying query issued via couponService.findByCode(code) slow. Since table litemall_coupon is mostly readby normal user and some times inserted or updated by the admin, the performance impact for write operations is acceptable under common cases.
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