fix(go): memory profiling

Programming-Languages/Go/profiling.md

@@ -0,0 +1,86 @@
+# Profiling in Go
+
+## CPU Profiling
+
+### Generate data
+
+```go
+import (
+    "runtime/pprof"
+)
+
+func main {
+    f, err := os.Create("my-tool.prof")
+    if err != nil {
+        log.Fatal(err)
+    }
+    pprof.StartCPUProfile(f)
+    defer pprof.StopCPUProfile()
+
+    // CPU Intensive code
+}
+```
+
+### View data
+
+```bash
+go tool pprof my-tool.prof
+```
+
+```bash
+# view top 10 functions
+(pprof) top
+
+# view top 20 functions
+(pprof) top20
+
+# view top 10 functions in a graph
+(pprof) top --cum
+
+# Visualize graph through web browser
+(pprof) web
+
+# Output graph as a svg
+(pprof) svg
+```
+
+## Memory Profiling
+
+Go comes with a built-in profiling tool called pprof that can provide detailed information about your application's runtime memory usage.
+
+### Generate data
+
+```go
+import _ "net/http/pprof"
+```
+
+Then, add the following code to start a new HTTP server that will serve the pprof endpoints:
+
+```go
+go func() {
+    log.Println(http.ListenAndServe("localhost:6060", nil))
+}()
+```
+
+With the above setup, you can access various profiling data by navigating to http://localhost:6060/debug/pprof/ while your application is running. For memory-related insights, http://localhost:6060/debug/pprof/heap is of particular interest.
+
+### Capture Heap Dump
+
+Once you have pprof set up and your application is running:
+
+Allow your application to run until you suspect a memory leak.  
+Capture a heap profile by executing:
+
+```bash
+curl -s http://localhost:6060/debug/pprof/heap -o mem.pprof
+```
+
+### Analyze data
+
+```bash
+go tool pprof mem.pprof
+```
+
+* Use the top command to get an overview of the functions consuming the most memory.
+* To see detailed memory allocations for a specific function, use the list command followed by the function name.
+* For a visual representation, web or svg commands can be used to generate graphs showcasing memory allocations.