Fix the 'concurrent map writes' panic by wrapping map access in a sync.Mutex to serialize operations.
The panic occurs because multiple goroutines are writing to the same map without synchronization. Wrap all map writes (and reads if concurrent) in a sync.Mutex to ensure only one goroutine accesses the map at a time.
var (
mu sync.Mutex
data = make(map[string]int)
)
// Safe write
mu.Lock()
data[key] = value
mu.Unlock()
// Safe read
mu.Lock()
val := data[key]
mu.Unlock()
The "concurrent map writes" panic in Go happens when two parts of your program try to change the same list of data at the exact same moment, causing a crash. Think of it like two people trying to write in the same notebook at the same time; one will scribble over the other's work. You need a 'lock' mechanism to ensure only one person writes at a time.