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september, 2023

AWS Community SummitEverything I know about S3 pre-signed URLs

Event Details

Luciano Mammino will be at AWS Community Summit (ComSum) Manchester on September 28th, delivering his talk ‘Everything I know about S3 pre-signed URLs’,- offering valuable insights on handling file uploads and downloads in web applications.

Talk Description

Almost every web application at some point needs a way to upload or download files… and no one seems to enjoy building reliable and scalable upload/download servers… and for good reasons too! In fact, you’ll probably need to manage long-running connections and handle files that can be quite large (i.e videos). If you are running a fully serverless backend using API Gateway and Lambda, you probably know that you are limited in terms of payload size and execution time, so things get even more complicated there. In all these cases you should consider offloading this problem to S3 by using S3 pre-signed URLs. Pre-signed URLs are a fantastic tool to handle file download and upload directly in S3 in a managed and scalable fashion. But all that glitters is not gold and S3 pre-signed URLs come with quite a few gotchas… So in this talk, we will explore some use cases, see some potential implementations of S3 pre-signed URLs and uncover some of the gotchas that I discovered while using them. By the end of this talk, you should know exactly when to use pre-signed URLs and how to avoid most of the many mistakes I made with them!


All Day (Thursday)


Victoria Warehouse

Victoria Warehouse, Trafford Park, Stretford, Manchester M17 1AB, United Kingdom


AWS ComSumAWS ComSum runs virtual and physical events for the AWS Community. Hosted at the fantastic Victoria Warehouse we'll have talks and sessions from leading figures in the AWS community. In the evening there'll be a chance to eat, drink and discuss the day’s events with 350 friends and colleagues from across the AWS community.