perf: avoid replacing dist tarball url on each call

cli/root.go

@@ -15,6 +15,7 @@ var rootCmd = &cobra.Command{
 }
 
 var rootOptions struct {
+	Silent          bool
 	ListenAddress   string
 	UpstreamAddress string
 	CacheLimit      string
@@ -22,6 +23,7 @@ var rootOptions struct {
 }
 
 func init() {
+	rootCmd.Flags().BoolVar(&rootOptions.Silent, "silent", getEnvBool("SILENT", "0"), "Disable logging")
 	rootCmd.Flags().StringVar(&rootOptions.ListenAddress, "listen", getEnvString("LISTEN_ADDRESS", "localhost:8080"), "Address to listen")
 	rootCmd.Flags().StringVar(&rootOptions.UpstreamAddress, "upstream", getEnvString("UPSTREAM_ADDRESS", "https://registry.npmjs.org"), "Upstream registry address")
 	rootCmd.Flags().StringVar(&rootOptions.CacheLimit, "cache-limit", getEnvString("CACHE_LIMIT", "0"), "Cached packages count limit")
@@ -39,5 +41,6 @@ func run(cmd *cobra.Command, args []string) {
 
 	proxy.Server(npmproxy.ServerOptions{
 		ListenAddress: rootOptions.ListenAddress,
+		Silent:        rootOptions.Silent,
 	}).ListenAndServe()
 }

cli/utils.go

@@ -23,3 +23,12 @@ func getEnvInt(env string, def string) int {
 
 	return converted
 }
+
+func getEnvBool(env string, def string) bool {
+	value := getEnvString(env, def)
+
+	// TODO: handle error
+	converted, _ := strconv.ParseBool(value)
+
+	return converted
+}

proxy/cache.go

@@ -57,8 +57,9 @@ func (proxy Proxy) GetCachedPath(path string, request *http.Request) ([]byte, er
 			return nil, err
 		}
 
-		// convert body to string
+		// TODO: avoid calling MustCompile every time
-		pkg = string(body)
+		// find "dist": "https?://.*/ and replace to "dist": "{localurl}/
+		pkg = regexp.MustCompile(`(?U)"tarball":"https?://.*/`).ReplaceAllString(string(body), `"dist": "http://localhost:8080/`)
 
 		// save to redis
 		err = proxy.Database.Set(key, pkg, options.DatabaseExpiration)
@@ -67,10 +68,6 @@ func (proxy Proxy) GetCachedPath(path string, request *http.Request) ([]byte, er
 		}
 	}
 
-	// TODO: avoid calling MustCompile every time
-	// find "dist": "https?://.*/ and replace to "dist": "{localurl}/
-	pkg = regexp.MustCompile(`(?U)"tarball":"https?://.*/`).ReplaceAllString(pkg, `"dist": "http://localhost:8080/`)
-
 	return []byte(pkg), nil
 }
 

proxy/server.go

@@ -13,14 +13,20 @@ import (
 // ServerOptions provides configuration for Server method
 type ServerOptions struct {
 	ListenAddress string
+	Silent        bool
 }
 
 // Server creates http proxy server
 func (proxy Proxy) Server(options ServerOptions) *http.Server {
 	router := gin.New()
 
-	logger, _ := zap.NewProduction()
+	if options.Silent {
-	router.Use(ginzap.Ginzap(logger, time.RFC3339, true))
+		router.Use(gin.Recovery())
+	} else {
+		logger, _ := zap.NewProduction()
+		router.Use(ginzap.Ginzap(logger, time.RFC3339, true))
+		router.Use(ginzap.RecoveryWithZap(logger, true))
+	}
 
 	router.GET("/:scope/:name", proxy.getPackageHandler)
 	router.GET("/:scope", proxy.getPackageHandler)

readme.md

@@ -77,6 +77,7 @@ ncp --listen "localhost:1234" # listen on port 1234
 | `--upstream <address>`  | `UPSTREAM_ADDRESS` | `https://registry.npmjs.org` | Upstream registry address           |
 | `--cache-limit <count>` | `CACHE_LIMIT`      | -                            | Cached packages count limit         |
 | `--cache-ttl <timeout>` | `CACHE_TTL`        | `3600`                       | Cache expiration timeout in seconds |
+| `--silent <address>`    | `SILENT`           | `0`                          | Disable logs                        |
 
 ---
 
@@ -146,17 +147,17 @@ NCP can be deployed using Kubernetes, Docker Compose or any other container orch
 Macbook Pro 15″ 2017, Intel Core i7-7700HQ. Note `GOMACPROCS=1`. 
 
 ```bash
-# GOMAXPROCS=1 ncp --listen localhost:8080
+# SILENT=1 GIN_MODE=release GOMAXPROCS=1 ncp
 
-$ go-wrk -c 100 -d 5 http://localhost:8080/ascii
+$ go-wrk -c 100 -d 10 http://localhost:8080/ascii
-Running 5s test @ http://localhost:8080/ascii
+Running 10s test @ http://localhost:8080/ascii
   100 goroutine(s) running concurrently
-33321 requests in 5.00537759s, 212.69MB read
+84216 requests in 10.000196326s, 535.30MB read
-Requests/sec:		6657.04
+Requests/sec:		8421.43
-Transfer/sec:		42.49MB
+Transfer/sec:		53.53MB
-Avg Req Time:		15.02169ms
+Avg Req Time:		11.874461ms
-Fastest Request:	230.514µs
+Fastest Request:	2.213324ms
-Slowest Request:	571.420487ms
+Slowest Request:	745.874068ms
 Number of Errors:	0
 ```