Asp.net 核心 Web API 使用 Dapper 执行 Postgres function 引发“读取超时”和“读取流时异常”

Question

ASP.Net Core Web API use Dapper to execute Postgres function and get exception sometime "Timeout during reading" and exception title is "Exception while reading from stream".

Web API deployed in Azure App service and Postgres is in Azure.

The Postgres connection string is given below.

Server=xyz.postgres.database.azure.com;Port=5432;Database=db1;Userid=user123;Password=pwd123;Timeout=120;Pooling=true;MinPoolSize=1;MaxPoolSize=30;Enlist=true;

Please give solution and reason for the issue.

Answer 1

Although the information you supplied is lacking. If I had to guess, I would say you are encountering command timeout issues. The default command timeout is 30 seconds. I presume you are using NpgSql driver. The documentation says that the default is 30 seconds . Try to add the following to your connection string and see if the timeout still occurs.

Command Timeout=120;

This will set a timeout of 2 minutes