From 6b53d013edff898ede155ed9312ebeefe14f9172 Mon Sep 17 00:00:00 2001
From: xkm <xkm@xkm.be>
Date: Wed, 1 Apr 2026 17:07:37 +0800
Subject: [PATCH] doc: add usage

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index e5b0ca8..2fbbbbe 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,10 @@
 
 
 The backend of a bigdata market.
+
+
+## Usage
+
+env:
+- DATABASE_URL  example:"postgres://datamarket:datamarket@localhost:5432/datamarket?sslmode=disable"
+- SERVER_ADDR  default :8080
\ No newline at end of file