mailboxInsert.fs

[<CLIMutableAttribute>]
[<AliasAttribute("hello")>]
type HelloDb = 
    { Name : string }
    
[<LiteralAttribute>]
let connStr = "Server = localhost; Port = 5432; Database = database; User Id = username; password = password;"

let dbfactory = OrmLiteConnectionFactory(connStr, PostgreSqlDialect.Provider)


let agent = 
        MailboxProcessor.Start(fun inbox ->
            //let db = dbfactory.Open(); persistance open connection.
            let rec messageLoop() = 
                async { 
                    let! (msg : Hello) = inbox.Receive()
                    do use db = dbfactory.Open()
                       //do some processing
                       db.InsertAsync(msg)
                       |> Async.AwaitTask
                       |> ignore
                       printfn "%A" msg.Name
                    do! Async.Sleep(rnd.Next(100, 1000))
                    return! messageLoop()
                }
            messageLoop())
agent.Post {Name:"Kunjan"}
//How can use this agent to insert data. Because if they are queue I guess it is ok to use persistance open connection. Here I am not doing it 
//but I guess that very much possible

Looks good to me. That SO question has good answers too!