From f414802c631a26ad7e16050ea524eec817559c7b Mon Sep 17 00:00:00 2001
From: LamGC <lam827@lamgc.net>
Date: Sat, 16 Jan 2021 01:43:00 +0800
Subject: [PATCH] =?UTF-8?q?[Add]=20CacheStore-Redis=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E6=8C=87=E5=AE=9A=E5=89=8D=E7=BC=80=E9=94=AE=E5=90=8D=E5=88=A0?=
 =?UTF-8?q?=E9=99=A4=E8=84=9A=E6=9C=AC,=20=E4=BB=A5=E6=8F=90=E4=BE=9B?=
 =?UTF-8?q?=E5=B8=A6=E6=9C=89=E5=8E=9F=E5=AD=90=E6=80=A7=E7=9A=84=20RedisC?=
 =?UTF-8?q?acheStore.clear=20=E6=93=8D=E4=BD=9C;?=
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[Add] RemoveKeysByPrefix.lua 添加用于实现 RedisCacheStore.clear 操作的脚本;
---
 .../src/main/lua/RemoveKeysByPrefix.lua        | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 ContentGrabbingJi-CacheStore-redis/src/main/lua/RemoveKeysByPrefix.lua

diff --git a/ContentGrabbingJi-CacheStore-redis/src/main/lua/RemoveKeysByPrefix.lua b/ContentGrabbingJi-CacheStore-redis/src/main/lua/RemoveKeysByPrefix.lua
new file mode 100644
index 0000000..48c0a8e
--- /dev/null
+++ b/ContentGrabbingJi-CacheStore-redis/src/main/lua/RemoveKeysByPrefix.lua
@@ -0,0 +1,18 @@
+local keyPrefix = tostring(KEYS[1])
+
+if (keyPrefix == nil) then
+    return false
+end
+
+if (string.sub(keyPrefix, string.len(keyPrefix)) ~= "*") then
+    keyPrefix = keyPrefix .. "*"
+end
+
+
+local keys = redis.call("KEYS", keyPrefix)
+local count = 0;
+for _, v in ipairs(keys) do
+    count = count + redis.call("DEL", v)
+end
+
+return count