2024-01-29 12:15:02

UNB/Year 4/Semester 2/CS3873/2024-01-29.md

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+Lecture Topic: HTTP
+
+# Conditional Get
+## Last-Modified
+You can check the Last-Modified header to only get contents if the contents are newer than the contents of the cache
+## ETag
+Use the hash of an object to check for modification to solve cache invalidation problem
+
+## TCP and HTTP
+HTTP runs on top of TCP
+- Client initiates TCP request to server
+- Server accepts TCP connection
+- Clint confirms request
+- Three way handshake
+
+## Non-persistent HTTP
+RTT = Round trip time