Delphi Programming Tutorial #64 - Preserving State in a DataSnap Rest Server

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In this video Alister Christie demonstrates how to store data for a session in a DataSnap REST server.

Alister Christie is a Delphi MVP (Most Valued Professional), Consultant, Developer, Trainer, Presenter, and Author. He has presented at ADUG (Australasian Delphi Users Group) Symposia and Code Rage Conferences for many years. Alister holds a degree in Mathematics and Computer Science from Victoria University, Wellington. He lives near Wellington, New Zealand.

On this YouTube Channel, Alister has created many hours of video tutorials to help you learn Delphi Programming in efficient and effective ways. Using his lessons, you will programme faster and better, skills applicable for beginners through to experts wanting to expand their programming and coding proficiency.

Video topics by Alister Christie include VCL (Visual Component Library), FireMonkey, FireDAC, Cross-platform, Android, iOS (iPad or iPhone Operating System), Mac OS/X, Windows, IoT (Internet of Things), Algorithms, and more.

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Alister, I'm new to DataSnap and building REST servers. After struggling for weeks to understand sessions, and what can and cannot be preserved, your video was the first thing that made sense of it for me. Thanks!

V-Dub
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The dates work fine for me, uploaded an hour after recording - it might be a time-zone issue - given this was recorded in New Zealand. YouTube might be reporting when it was uploaded your time.

codegearguru
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Thanks for this video, Very helpful.

How many TRESTClient objects would you advice we have in an application. Should every request to the RESTServer be made with a new TRESTClient or just 1 TRESTClient is enough to be used by all TRESTRequest object in an application.

elikpodo
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How could I preserve the session id of the same user in DataSnap rest?

lucasbelo