Another article we wrote gave an introduction to Backendless pub/sub messaging which included a sample for broadcasting and receiving messages. Today we are going to show how to use Backendless messaging for conditional message delivery.
In another post, we described how to adjust an object’s access control list (ACL) using Backendless Console. As we mentioned, in addition to Backendless Console, the object’s permissions can be controlled using API.
As data objects are being saved or updated with the API requests some properties of the objects may not have a value assigned to them. It may be necessary that for those properties a default value is assigned. This is identical to how relational databases may have a default value for a column.
As soon as you have data in persistent storage, the question of searching would be one of the first to come up. Indeed, how can you query the backend for data? We considered multiple options and elected to use the most popular one – SQL.
Once a user of a Backendless-powered app logs in, a session is established. For a variety of reasons, including application security, it is best not to allow users to remain logged in indefinitely. Therefore, every session has an inactivity timeout timer that is reset with every new API call made within the session. When the…
Backendless provides an easy-to-use API to introspect data tables. Given a table name, the API provides information about table columns, their names, data types, default values, etc. If a column represents a relationship, it is properly denoted as such in the provided information.
Backendless Geolocation allows you to map a location to a data object. This feature can lead to a lot of interesting opportunities. For example, consider a taxi booking service like Uber. You may have multiple cars/drivers available for hire as well as customers putting in pickup requests. Both drivers and customers may be represented by…
There are two types of custom business logic (Cloud Code) scripts supported by Backendless – API event handlers and timers. In this post, we will review the latter. A timer is a server-side program deployed to the Backendless server infrastructure which is scheduled to run on a pre-defined schedule.
Backendless Console is a development tool that is also the frontend for your backend. It is quite common for more than one developer to need to access the Console to view data, test queries, or adjust the security settings. The Console and the backend are built in a way where concurrent developer logins to the…