Have you had experience identifying and fixing memory leak issues in projects?

Yes, in Go projects I have encountered memory leaks and how to identify and fix them. The main steps for diagnosis:

1. Using a memory profiler (pprof) to collect data on memory allocation.
2. Analyzing heap dumps and identifying objects that are not released.
3. Checking goroutines for leaks — for example, goroutines that block and do not terminate.
4. Searching for cyclic references or improper caching usage.

Example of using pprof:

import (
    "net/http"
    _ "net/http/pprof"
)

func main() {
    go func() {
        log.Println(http.ListenAndServe("localhost:6060", nil))
    }()
    // other code
}

After starting, you can connect to http://localhost:6060/debug/pprof/heap to analyze the memory dump.

Fixing usually involves correcting the logic that holds references to objects longer than necessary or properly closing resources.