Opa (programming language): Difference between revisions

Revision as of 15:48, 29 January 2021

Revision as of 09:05, 5 February 2021

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== Design and features ==

Opa consists of a [[web server]], a [[database]] and distributed execution engine.<ref>{{cite web |url=http://www.webappers.com/2011/07/22/opa-the-scalable-open-source-cloud-language/|title=Opa – The Scalable Open Source Cloud Language |publisher=WebAppers |date=22 July 2011}}</ref> Code written in Opa is compiled to [[JavaScript]] using [[Node.js]] on the [[Server-side scripting|server side]] and to [[JavaScript]] using [[jQuery]] for cross-browser compatibility on the [[Client-side scripting|client side]].<ref>{{cite web |url=http://www.infoq.com/articles/Opa|publisher=InfoQ|title=Interview: François-Régis Sinot on Opa, a Web Development Platform|date=7 September 2011}}</ref>

The advantage of the approach compared to certain [[Rich Internet Application]] (RIA) platforms is that users are not required to install a [[Browser plugin|plugin]] in their browser.<ref>{{cite web |author=Neil McAllister|url=httphttps://www.infoworld.com/darticle/application-development2620269/introducing-opa--a-web-dev-language-to-rule-them-all-172060.html|publisher=InfoWorld |title=Introducing Opa, a Web dev language to rule them all |date=8 September 2011}}</ref> Opa shares motivations with [[web framework]]s, but takes a different approach.<ref>{{cite web|url=httphttps://www.infoworld.com/darticle/developer-world2626870/infoworld-review-tools-for-rapid-web-development-297.html|title=InfoWorld review: Tools for rapid Web development|publisher=[[InfoWorld]]|date=12 May 2010}}</ref>

Its designers assert that this helps Opa to avoid many security issues, like [[SQL injection]]s or [[cross-site scripting]] (XSS) attacks.<ref>{{cite web|url=http://www.heise.de/developer/meldung/Auch-Opa-ist-fuer-Cloud-Anwendungen-1288588.html|title=Auch Opa ist für Cloud-Anwendungen |publisher=[[Heise Online]]|date=29 July 2011}}</ref>