Websockets A websocket connection opened by a client must eventually connect to a websocket server. API Gateway The job of the API gateway is to accept an incoming websocket connection from a client and correctly route it to a websocket server. An API gateway will redirect ALL data sent from a client websocket to the … Read more
It’s generally not a good idea: Expectations Users, especially power users, expect to be able to right-click on elements in desktop applications in order to get a menu of element-specific actions. This expectation does not exist for web applications – indeed, the expectation is that right-clicking in a web page will give you the standard … Read more
You might find inspiration from ScreenshotMe. Basically you need different parts: something that takes the image out of the clipboard and uploads it to the web: this could be a java applet, flash or firefox extensions. Flash or Java would have the advantage of being cross browser then you use the <canvas> tag to display … Read more
Your question is mixing a few different concepts. You started out saying you wanted to run sites on the same server using the same domain, but in different folders. That doesn’t require any special setup. Once you get the single domain running, you just create folders under that docroot. Based on the rest of your … Read more
I recently went through analysis on Docker for this type of setup. I know there are some who view Docker as a sort of MicroVM, but my take is the Docker philosophy leans more toward single process per container. This tracks well with the Single Responsibility principle in programming. The more a Docker container does, … Read more
There are no big difference rather than naming. Use whichever you prefer: href=”/manifest.webmanifest” or “/manifest.json”. Just don’t forget that MIME type has to be: application/manifest+json in both cases. <link rel=”manifest” href=”/manifest.webmanifest”> <link rel=”manifest” href=”/manifest.json”> Note that spec says it should be manifest.webmanifest. And later it may be important because it is under heavy development. For … Read more
Adding a get parameter like ?foo=12345 will treat your file as a different one and therefore recache it, but NOT clear any cache for the existing file. Type: chrome://appcache-internals/ and you’ll get Lucky 🙂
I wouldn’t count on it. It’s probably okay to listen for shortcuts that use the Alt modifier, but there’s still no way to be sure a keyboard shortcut is free. Users can always install programs that listen for keyboard shortcuts, or use a browser you didn’t expect. If the shortcuts can be used only when … Read more
I’m a developer on Cloud Foundry — and yes, Cloud Foundry is indeed a bit nebulous (no pun intended). Hopefully I can help clarify things a bit. Cloud Foundry is a platform as a service, but it needs an infrastructure as a service underneath it. Cloud Foundry supports vSphere, vCloud, OpenStack, and Amazon AWS as … Read more