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Bloggery

DEV

Performing an operation at a given average throughput

Posted by gavin on Oct. 25, 2017, 2:03 p.m.

A programming task I've often needed, especially while writing benchmarking code, is to perform an operation at a given number of times per second. For example, I want to see how a queue system performs under a load of 10 messages per second. To do this, I write a script to generate messages at the given rate. What is the correct pattern to ensure it runs at the correct rate, when the time to execute each iteration of the loop is variable, due to differences in how long it takes to construct the message or scheduling delays?

DEV

Security In Layers: Preventing XSS Attacks with AWS S3 Direct Upload

Posted by alex on Oct. 19, 2017, 1:56 p.m.

For any any web developer, allowing users to upload files to a service and then serving those files back other users is a great way to open those users and your service up to a whole host of security vulnerabilities. This article will attempt to give some guidelines on a few things to be aware of when hosting user files, and is specifically aimed at using Amazon S3 direct upload.