How to speed up query execution?

To speed up query execution in Go, several approaches can be used:

• Parallelism and concurrency: Use goroutines to execute independent queries in parallel.
• Connection pool: Configure a connection pool to the database to avoid the overhead of establishing connections.
• Caching: Cache the results of frequently repeated queries to reduce load on the database.
• Query optimization: Minimize the amount of data transmitted, select only the necessary fields.
• Using prepared statements: This reduces the overhead of parsing and planning queries.

Example of using goroutines and a connection pool:

var wg sync.WaitGroup
wg.Add(2)
go func() {
    defer wg.Done()
    // Execute first query
}()
go func() {
    defer wg.Done()
    // Execute second query
}()
wg.Wait()

It is also important to profile the application and identify bottlenecks.