diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b4195bb
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+insert_final_newline = true
+charset = utf-8
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[{Makefile,go.mod,go.sum,*.go}]
+indent_style = tab
+indent_size = 2
diff --git a/.gitignore b/.gitignore
index b07a1b1..2e5d344 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,5 +15,4 @@ nebula-httpd
 vendor/
 
 # Dependency directories (remove the comment below to include it)
-# vendor/
-tmp/*
+tmp/
diff --git a/Makefile b/Makefile
index 45b3b9e..b4ff00c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,3 @@
-
 .PHONY: build clean fmt
 
 default: build
@@ -6,8 +5,8 @@ default: build
 clean:
 	@go mod tidy && rm -rf nebula-httpd
 
-build: clean fmt
-	@go build -o nebula-httpd main.go
-
 fmt:
 	@find . -type f -iname \*.go -exec go fmt {} \;
+
+build: clean fmt
+	@go build -o nebula-httpd main.go
diff --git a/README.md b/README.md
index a133e8f..ea5d78f 100644
--- a/README.md
+++ b/README.md
@@ -23,11 +23,11 @@ $ ./nebula-httpd
 ## User Guide
 
 #### API Definition
-| Name | Path | Method |
-| --- | --- | --- |
-| connect | /api/db/connect | POST |
-| exec | /api/db/exec | POST |
-| disconnect | /api/db/disconnect | POST |
+| Name       | Path               | Method |
+|------------|--------------------|--------|
+| connect    | /api/db/connect    | POST   |
+| exec       | /api/db/exec       | POST   |
+| disconnect | /api/db/disconnect | POST   |
 
 > Connect API
 
@@ -42,12 +42,12 @@ The requested json body
 ```
 The description of the parameters is as follows.
 
-| Field | Description |
-| --- | --- |
+| Field    | Description                                                                                                                 |
+|----------|-----------------------------------------------------------------------------------------------------------------------------|
 | username | Sets the username of your Nebula Graph account. Before enabling authentication, you can use any characters as the username. |
 | password | Sets the password of your Nebula Graph account. Before enabling authentication, you can use any characters as the password. |
-| address | Sets the IP address of the graphd service. |
-| port | Sets the port number of the graphd service. The default port number is 9669. |
+| address  | Sets the IP address of the graphd service.                                                                                  |
+| port     | Sets the port number of the graphd service. The default port number is 9669.                                                |
 
 ```bash
 $ curl -i  -X POST -d '{"username":"user","password":"password","address":"192.168.8.26","port":9669}' http://127.0.0.1:8080/api/db/connect
@@ -67,10 +67,10 @@ Date: Fri, 02 Apr 2021 08:49:18 GMT
 }
 ```
 
-Notice: 
+Notice:
 
-The response data nsid "5e18fa40-5343-422f-84e3-e7f9cad6b735" is encoded by HMAC-SH256 encryption algorithm，so it's not the same as what you get from a cookie.  
-If you connect the graphd service succeed, remember to save the *NSID*, it's important for the *exec api* to execute nGQL.  
+The response data nsid "5e18fa40-5343-422f-84e3-e7f9cad6b735" is encoded by HMAC-SH256 encryption algorithm，so it's not the same as what you get from a cookie.
+If you connect the graphd service succeed, remember to save the *NSID*, it's important for the *exec api* to execute nGQL.
 If you restart the gateway server, all authenticated session will be lost, please noticed.
 
 > Exec API
diff --git a/tests/controller/db_test.go b/controllers/db_test.go
similarity index 100%
rename from tests/controller/db_test.go
rename to controllers/db_test.go
diff --git a/go.sum b/go.sum
index 81e2878..ba5c01b 100644
--- a/go.sum
+++ b/go.sum
@@ -328,8 +328,6 @@ github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1
 github.com/ugorji/go v0.0.0-20171122102828-84cb69a8af83/go.mod h1:hnLbHMwcvSihnDhEfx2/BzKp2xb0Y+ErdfYcrs9tkJQ=
 github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
-github.com/vesoft-inc/nebula-go/v2 v2.0.0-20210603033436-24ea78f90a1e h1:B53wGI1tbj/QP2nPm+ubQx/3UTmf4gMhmCVqndfis/o=
-github.com/vesoft-inc/nebula-go/v2 v2.0.0-20210603033436-24ea78f90a1e/go.mod h1:B7nR6+nOSo0umq/HkCmUfyRtYrJVOsNiPS9u4djDbSc=
 github.com/vesoft-inc/nebula-go/v2 v2.0.0-20210709070507-5ab4bdcd57db h1:I22+tDn3oRUPAyhLgjwteYE8ZmZDJZfkQEBHyGiosKo=
 github.com/vesoft-inc/nebula-go/v2 v2.0.0-20210709070507-5ab4bdcd57db/go.mod h1:B7nR6+nOSo0umq/HkCmUfyRtYrJVOsNiPS9u4djDbSc=
 github.com/wendal/errors v0.0.0-20130201093226-f66c77a7882b/go.mod h1:Q12BUT7DqIlHRmgv3RskH+UCM/4eqVMgI0EMmlSpAXc=
diff --git a/tmp/runner-build b/tmp/runner-build
deleted file mode 100755
index 8d11e85..0000000
Binary files a/tmp/runner-build and /dev/null differ