Add new glossary entries

Author: rivea0

notes-to-self/glossary/active-queue-management-aqm.mdx

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+---
+title: Active queue management (AQM)
+slug: active-queue-management-aqm
+---
+
+Active queue management (AQM) is pushing the low priority requests out of the queue when a priority request comes in so that the priority request does not get dropped.

notes-to-self/glossary/random-early-detection-red.mdx

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+---
+title: Random early detection (RED)
+slug: random-early-detection-red
+---
+
+It's an [AQM](/notes/glossary/note/active-queue-management-aqm) algorithm. Random early detection (RED) is when low priority requests get more likely to get dropped as the queue gets more full. Priority requests only get dropped when the queue is full. So, you get to drop more low priority requests in return of dropping less priority requests.

notes-to-self/glossary/tail-drop.mdx

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+---
+title: Tail drop
+slug: tail-drop
+---
+
+Tail drop is dropping the requests that come at the end of the queue when the queue is full.