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I know that using LocalDb is very good and easy for developement, I wonder if it’s good idea to use it in production when I host websites on IIS server?
I’m asking because I wonder if it won’t have any kind of speed issues in production.
This is my connection string that I want to use in production
Server=(LocalDB)\\v11.0;Integrated Security=SSPI;MultipleActiveResultSets=true;
AttachDBFilename=|DataDirectory|ProjectDB.mdf;
LocalDB is absolutely supported in production. From the performance point of view it is identical to SQL Server Express, as they share the same database engine.
Now, for a site running in full IIS I would recommend using service-based instance of SQL Server Express. Since IIS is running as a service it is best to have a service-hosted database as well. That means you should not be using
User Instance=trueorAttachDbFileName=...in your connection string.If you want to learn more, I recommend this post on using LocalDB from full IIS, part 1 and its follow up, part 2. They go into more details.