如何在C＃或VB.NET中使用SqLite连接池？

Question

The connection string for SqLite can include options for using a connection pool, eg (pseudo code)

Dim connectionString = "Data Source=" + Path + ";" +
                                    "Version=3;" +
                                    "Pooling=True;" +
                                    "Max Pool Size=100;"

I would expect that there is some extra class or factory method for using connection pools, eg

dim connectionPool = new SqLiteConnectionPool(connectionString)

dim firstConnection = connectionPool.getConnection()
...
firstConnection.dispose()

...
dim secondConnection = connectionPool.getConnection()

However, I could not find such a class.

=> How do I give back a connection to the connection pool ?

=> How can I reuse a connection that has previously been returned to the pool ?

Searching for "pool" on https://system.data.sqlite.org/index.html/doc/trunk/www/index.wiki did not give any results.

a) Do I have to call the constructor for the connection several times?

dim firstConnection = new SqLiteConnection(connectionString)
...
firstConnection.dispose()


dim secondConnection = new SqLiteConnection(connectionString)

Passing the connection string several times does not seem to be intuitive for me.

b) Or would I create the connection only once and somehow wake it up after it has been closed/disposed?

dim connection = new SqLiteConnection(connectionString))
using connection 
 ...
end using 

connection.open()
using connection
 ...
end using 

Answer 1

The SQLite driver will manage pools for you, however, there is one key point many don't realize when using connections.

OPEN LATE, CLOSE EARY

A connection can't be returned to the pool if it's open. So, you can create the connection, prepare the statements, however, only open the connection immediately before executing the query.