In my previous article, I mentioned that download shaping with rate limiting can avoid download bufferbloat. In this article, I wanted to take a closer look at the factors that contribute to download bufferbloat and how rate limiting works around the problem.

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CoDel (Controlled Delay) is an Active Queue Management algorithm that drops packets based on delay rather than queue length. FQ_CoDel (Fair Queueing Controlled Delay) combines CoDel with fair queueing to share bandwidth between flows.

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