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领取优惠券开启事务，并在查询优惠券信息时加update锁解决并发领优惠券产生超买问题。

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修复优惠券领取数量设置为0时，没有返回错误
This commit is contained in:
JunFeng Wu
2023-04-28 15:22:38 +08:00
parent 110de1d2a7
commit 7d7e408ddb
4 changed files with 60 additions and 25 deletions
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CoreCms.Net.Repository/BaseRepository.cs
+6 -2
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@@ -331,12 +331,16 @@ namespace CoreCms.Net.Repository
/// </summary>
/// <param name="predicate">条件表达式树</param>
/// <param name="blUseNoLock">是否使用WITH(NOLOCK)</param>
/// <param name="blUseTranLock">是否使用事务锁</param>
/// <param name="dbLockType">事务锁类型</param>
/// <returns></returns>
public async Task<T> QueryByClauseAsync(Expression<Func<T, bool>> predicate, bool blUseNoLock = false)
public async Task<T> QueryByClauseAsync(Expression<Func<T, bool>> predicate, bool blUseNoLock = false,bool blUseTranLock = false,
DbLockType dbLockType = DbLockType.Wait)
{
return blUseNoLock
? await DbBaseClient.Queryable<T>().With(SqlWith.NoLock).FirstAsync(predicate)
: await DbBaseClient.Queryable<T>().FirstAsync(predicate);
: (blUseTranLock? await DbBaseClient.Queryable<T>().TranLock(dbLockType).FirstAsync(predicate)
: await DbBaseClient.Queryable<T>().FirstAsync(predicate));
}
/// <summary>