There are many different client/server development scenarios, but in all of them, you need to switch between the client-side and the server-side to look at your server debugger or error window. To make your life easier, we’ve added a new option that allows you to decide where you want to debug your server code. Do you need to debug on a client because your server is headless? Just attach it to your client through your 4D menu!
4D v18 R4 and ORDA made it possible for you to create high-level class functions above the data model. This allows you to write business-oriented code to hide complexity, reduce errors, and speed up the development process.
With 4D v18 R5, we’re bringing even more features to help you optimize and organize your code. For example, you might need to run a function locally on the client to improve performance when working in client/server mode. It’s now possible! Or if you expose your database as a REST server, you might want some functions to be available on the server-side but hidden for your REST clients. This is also possible!
Do you need to build a customized 4D connection dialog? Interested in connecting your client application to different servers? These are two scenarios that 4D v18 lets you to handle. This blog post is for you if you want to create a custom remote connection dialog and connect it to merged 4D servers. Keep reading!
Ever need to analyze the traffic of your ORDA requests between a client and the 4D server? Sometimes it may take a while to receive a response from the server, which can make you wonder if it’s due to network traffic or to an unoptimized request you’ve written! Thankfully, 4D v17 R6 makes it possible to determine the likely reason(s) for this latency with the new ORDA methods available on the ds object. They’re not only debugging functions, they also allow you to optimize your ORDA code with a better understanding of the sent requests.
Using ORDA to access large tables (especially those with relations) in Client/Server mode has been greatly enhanced. With 4D v17 R5, you’ll see 2-3xs improved LAN performance and up to 30xs faster WAN performance. And best of all – there’s no need to change anything in your code, it’s all automatic. Interesting, isn’t it? Well, let’s delve into the details.
You asked for a way to run multiple clients on the same computer AND simultaneously connect them to the same 4D Server. We not only heard you, we’re giving you even more with 4D v17 R5! Each connection now includes a separated cache folder containing the connection’s IP address, port, and a hash code. Thanks to this, you can now also connect several clients from the same machine to multiple servers on different machines. There’s no configuration necessary, just launch and watch it work!
Do you need to run complex calculations or exports on the client side? Use preemptive processes and start these actions without slowing down users and their daily work!
With the new network layer, we can implement new functions that were impossible with the legacy network layer. The first is the application sleep notification.