HOW TO handle web request errors

 I like illustrations that summarize a whole topic


Paraphrased notes from a LinkedIn post of Alex Xu:

Intermittent errors can be handled effectively with exponential backoff in the browser and with a flow control gateway on the server side. 

Exponential backoff controls the latency between two retries. 

A common way to control the flow of HTTP requests is to set up a flow control gateway in front of the server. This provides two useful tools:

1. Rate limiter, which limits how often a request can be made. It has two slightly different choices; the token bucket and the leaky bucket.

2. Circuit breaker. This will stop the HTTP flow immediately when the error threshold is exceeded. After a set amount of time, it will only let a limited amount of HTTP traffic through. If everything works well, it will slowly let all HTTP traffic through.

More answers to web dev questions:

How does the browser render a web page?

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