diff --git a/Backend/System_Design_Interview/chapter01.md b/Backend/System_Design_Interview/chapter01.md
index e69de29..beeb983 100644
--- a/Backend/System_Design_Interview/chapter01.md
+++ b/Backend/System_Design_Interview/chapter01.md
@@ -0,0 +1 @@
+# 1장 - 사용자 수에 따른 규모 확장성
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