diff --git a/config/config.go b/config/config.go
index fb462f8f..2eaa31ce 100644
--- a/config/config.go
+++ b/config/config.go
@@ -9,13 +9,21 @@ import (
 	"strconv"
 )
 
+// Default config parameters values
 const (
-	DefaultBaseURL = "http://localhost"
+	DefaultBaseURL          = "http://localhost"
+	DefaultDatabaseURL      = "postgres://postgres:postgres@localhost/miniflux2?sslmode=disable"
+	DefaultWorkerPoolSize   = 5
+	DefaultPollingFrequency = 60
+	DefaultBatchSize        = 10
+	DefaultDatabaseMaxConns = 20
+	DefaultListenAddr       = "127.0.0.1:8080"
 )
 
-type Config struct {
-}
+// Config manages configuration parameters.
+type Config struct{}
 
+// Get returns a config parameter value.
 func (c *Config) Get(key, fallback string) string {
 	value := os.Getenv(key)
 	if value == "" {
@@ -25,6 +33,7 @@ func (c *Config) Get(key, fallback string) string {
 	return value
 }
 
+// GetInt returns a config parameter as integer.
 func (c *Config) GetInt(key string, fallback int) int {
 	value := os.Getenv(key)
 	if value == "" {
@@ -35,6 +44,7 @@ func (c *Config) GetInt(key string, fallback int) int {
 	return v
 }
 
+// NewConfig returns a new Config.
 func NewConfig() *Config {
 	return &Config{}
 }
diff --git a/locale/translations.go b/locale/translations.go
index ed17220d..57b8cbd5 100644
--- a/locale/translations.go
+++ b/locale/translations.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.645632989 -0800 PST m=+0.024631837
+// 2017-11-21 20:18:16.06757584 -0800 PST m=+0.047008676
 
 package locale
 
diff --git a/main.go b/main.go
index aedbd0a1..9ab7cdc4 100644
--- a/main.go
+++ b/main.go
@@ -47,8 +47,17 @@ func run(cfg *config.Config, store *storage.Storage) {
 	server := server.NewServer(cfg, store, feedHandler)
 
 	go func() {
-		pool := scheduler.NewWorkerPool(feedHandler, cfg.GetInt("WORKER_POOL_SIZE", 5))
-		scheduler.NewScheduler(store, pool, cfg.GetInt("POLLING_FREQUENCY", 30), cfg.GetInt("BATCH_SIZE", 10))
+		pool := scheduler.NewWorkerPool(
+			feedHandler,
+			cfg.GetInt("WORKER_POOL_SIZE", config.DefaultWorkerPoolSize),
+		)
+
+		scheduler.NewScheduler(
+			store,
+			pool,
+			cfg.GetInt("POLLING_FREQUENCY", config.DefaultPollingFrequency),
+			cfg.GetInt("BATCH_SIZE", config.DefaultBatchSize),
+		)
 	}()
 
 	<-stop
@@ -82,8 +91,8 @@ func main() {
 
 	cfg := config.NewConfig()
 	store := storage.NewStorage(
-		cfg.Get("DATABASE_URL", "postgres://postgres:postgres@localhost/miniflux2?sslmode=disable"),
-		cfg.GetInt("DATABASE_MAX_CONNS", 20),
+		cfg.Get("DATABASE_URL", config.DefaultDatabaseURL),
+		cfg.GetInt("DATABASE_MAX_CONNS", config.DefaultDatabaseMaxConns),
 	)
 
 	if *flagInfo {
diff --git a/server/server.go b/server/server.go
index 9ab0ab86..61b62291 100644
--- a/server/server.go
+++ b/server/server.go
@@ -20,7 +20,7 @@ func NewServer(cfg *config.Config, store *storage.Storage, feedHandler *feed.Han
 		ReadTimeout:  5 * time.Second,
 		WriteTimeout: 10 * time.Second,
 		IdleTimeout:  60 * time.Second,
-		Addr:         cfg.Get("LISTEN_ADDR", "127.0.0.1:8080"),
+		Addr:         cfg.Get("LISTEN_ADDR", config.DefaultListenAddr),
 		Handler:      getRoutes(cfg, store, feedHandler),
 	}
 
diff --git a/server/static/bin.go b/server/static/bin.go
index ae5a4b27..74c9e71d 100644
--- a/server/static/bin.go
+++ b/server/static/bin.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.626742594 -0800 PST m=+0.005741442
+// 2017-11-21 20:18:16.027243814 -0800 PST m=+0.006676650
 
 package static
 
diff --git a/server/static/css.go b/server/static/css.go
index 11e827ef..72176a6d 100644
--- a/server/static/css.go
+++ b/server/static/css.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.629675274 -0800 PST m=+0.008674122
+// 2017-11-21 20:18:16.030648994 -0800 PST m=+0.010081830
 
 package static
 
diff --git a/server/static/js.go b/server/static/js.go
index 07f2de07..b10a45d0 100644
--- a/server/static/js.go
+++ b/server/static/js.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.631783539 -0800 PST m=+0.010782387
+// 2017-11-21 20:18:16.035467739 -0800 PST m=+0.014900575
 
 package static
 
diff --git a/server/template/common.go b/server/template/common.go
index 2dc24c60..7d437c5d 100644
--- a/server/template/common.go
+++ b/server/template/common.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.643994492 -0800 PST m=+0.022993340
+// 2017-11-21 20:18:16.064392532 -0800 PST m=+0.043825368
 
 package template
 
diff --git a/server/template/views.go b/server/template/views.go
index cfa571f6..3d875ce8 100644
--- a/server/template/views.go
+++ b/server/template/views.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.633723314 -0800 PST m=+0.012722162
+// 2017-11-21 20:18:16.038376976 -0800 PST m=+0.017809812
 
 package template
 
diff --git a/sql/sql.go b/sql/sql.go
index fffc6a98..dc8a1b80 100644
--- a/sql/sql.go
+++ b/sql/sql.go
@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2017-11-21 19:31:59.625242989 -0800 PST m=+0.004241837
+// 2017-11-21 20:18:16.024887819 -0800 PST m=+0.004320655
 
 package sql