diff --git a/bookmarks/toolbar/it/infrastructure/understanding-nginx-http-proxying-load-b_guo4.json b/bookmarks/toolbar/it/infrastructure/understanding-nginx-http-proxying-load-b_guo4.json
new file mode 100644
index 0000000..0e84cb8
--- /dev/null
+++ b/bookmarks/toolbar/it/infrastructure/understanding-nginx-http-proxying-load-b_guo4.json
@@ -0,0 +1,4 @@
+{
+  "title": "Understanding Nginx HTTP Proxying, Load Balancing, Buffering, and Caching | DigitalOcean",
+  "url": "https://www.digitalocean.com/community/tutorials/understanding-nginx-http-proxying-load-balancing-buffering-and-caching"
+}
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