diff --git a/.env.example b/.env.example
index 9445fac..511dbe2 100644
--- a/.env.example
+++ b/.env.example
@@ -7,4 +7,15 @@ KC_SERVICE_ACCOUNT_SECRET=
 APP_HOST=0.0.0.0
 APP_PORT=3000
 
+MINIO_HOST=192.168.1.20
+MINIO_PORT=9000
+MINIO_ACCESS_KEY=
+MINIO_SECRET_KEY=
+MINIO_BUCKET=jws-dev
+
+ELASTICSEARCH_PROTOCOL=http
+ELASTICSEARCH_HOST=192.168.1.20
+ELASTICSEARCH_PORT=9200
+ELASTICSEARCH_INDEX=jws-log-index
+
 DATABASE_URL=postgresql://postgres:1234@192.168.1.20:5432/dev_1?schema=public
diff --git a/src/app.ts b/src/app.ts
index 2d500f5..d9c0a8f 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -5,6 +5,7 @@ import swaggerUi from "swagger-ui-express";
 import swaggerDocument from "./swagger.json";
 import error from "./middlewares/error";
 import { RegisterRoutes } from "./routes";
+import logMiddleware from "./middlewares/log";
 
 const APP_HOST = process.env.APP_HOST || "0.0.0.0";
 const APP_PORT = +(process.env.APP_PORT || 3000);
@@ -15,6 +16,9 @@ const APP_PORT = +(process.env.APP_PORT || 3000);
   app.use(cors());
   app.use(json());
   app.use(urlencoded({ extended: true }));
+
+  app.use(logMiddleware);
+
   app.use("/", express.static("static"));
   app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(swaggerDocument));
 
diff --git a/src/interfaces/http-error.ts b/src/interfaces/http-error.ts
index 787b79c..e9f34fd 100644
--- a/src/interfaces/http-error.ts
+++ b/src/interfaces/http-error.ts
@@ -1,6 +1,13 @@
 import HttpStatus from "./http-status";
 
-type DevMessage = "missing_or_invalid_parameter" | "data_exists" | "unknown_url" | "data_not_found";
+type DevMessage =
+  | "missing_or_invalid_parameter"
+  | "data_exists"
+  | "data_in_used"
+  | "no_permission"
+  | "unknown_url"
+  | "data_not_found"
+  | "unauthorized";
 
 class HttpError extends Error {
   /**
diff --git a/src/middlewares/log.ts b/src/middlewares/log.ts
new file mode 100644
index 0000000..9db083d
--- /dev/null
+++ b/src/middlewares/log.ts
@@ -0,0 +1,77 @@
+import { NextFunction, Request, Response } from "express";
+import elasticsearch from "../services/elasticsearch";
+
+if (!process.env.ELASTICSEARCH_INDEX) {
+  throw new Error("Require ELASTICSEARCH_INDEX to store log.");
+}
+
+const ELASTICSEARCH_INDEX = process.env.ELASTICSEARCH_INDEX;
+
+const LOG_LEVEL_MAP: Record<string, number> = {
+  debug: 4,
+  info: 3,
+  warning: 2,
+  error: 1,
+  none: 0,
+};
+
+async function logMiddleware(req: Request, res: Response, next: NextFunction) {
+  if (!req.url.startsWith("/api")) return next();
+
+  let data: any;
+
+  const originalJson = res.json;
+
+  res.json = function (v: any) {
+    data = v;
+    return originalJson.call(this, v);
+  };
+
+  const timestamp = new Date().toString();
+  const start = performance.now();
+
+  req.app.locals.logData = {};
+
+  res.on("finish", () => {
+    const level = LOG_LEVEL_MAP[process.env.LOG_LEVEL ?? "info"] || 1;
+
+    if (level === 1 && res.statusCode < 500) return;
+    if (level === 2 && res.statusCode < 400) return;
+    if (level === 3 && res.statusCode < 200) return;
+
+    const obj = {
+      logType: res.statusCode >= 500 ? "error" : res.statusCode >= 400 ? "warning" : "info",
+      systemName: "JWS-SOS",
+      startTimeStamp: timestamp,
+      endTimeStamp: new Date().toString(),
+      processTime: performance.now() - start,
+      host: req.hostname,
+      sessionId: req.headers["x-session-id"],
+      rtId: req.headers["x-rtid"],
+      tId: req.headers["x-tid"],
+      method: req.method,
+      endpoint: req.url,
+      responseCode: res.statusCode,
+      responseDescription:
+        data.devMessage !== undefined
+          ? data.devMessage
+          : { 200: "success", 201: "created_success", 204: "no_content", 304: "success" }[
+              res.statusCode
+            ],
+      // input: (level < 1 && req.body) || undefined,
+      // output: (level < 1 && data) || undefined,
+      ...req.app.locals.logData,
+    };
+
+    console.log(obj);
+
+    elasticsearch.index({
+      index: ELASTICSEARCH_INDEX,
+      document: obj,
+    });
+  });
+
+  return next();
+}
+
+export default logMiddleware;
diff --git a/src/services/elasticsearch.ts b/src/services/elasticsearch.ts
new file mode 100644
index 0000000..529bc4f
--- /dev/null
+++ b/src/services/elasticsearch.ts
@@ -0,0 +1,7 @@
+import { Client } from "@elastic/elasticsearch";
+
+const elasticsearch = new Client({
+  node: `${process.env.ELASTICSEARCH_PROTOCOL}://${process.env.ELASTICSEARCH_HOST}:${process.env.ELASTICSEARCH_PORT}`,
+});
+
+export default elasticsearch;