MongoDB is a NoSQL database and one of the main difference compared to relational DB is you can put in your collection documents with different structure. In fact you don’t really care about structure of documents and type of data you are storing.
This is particularly true when you start using your Mongo instance with langage like PHP or JS where the langage itself does not manage data type explicitly.
As a consequence your document format may not be optimized (like storing numbers in String and making search on them later) and once you decide to move your backend to a more structured language like Java you start to have to make this more robust and organized. At this point you may want to reformat your documents to match the right type, eventually update your previous documents to a new version.
This kind of operation can be done “easily” with Mongo scripting language. This post will details 2 of the current structure to manipulate and transform Documents.
The Adeunis Field Tester is a simple way to make test on a LoRaWan network. The device provide GPS information, temperature and an accelerometer to activate communications.
When deploying a API in a scalable environment we usually try tom implement a stateless solution to avoid parallelism conflicts between the different nodes.
I have this board in my stock since some months and never taken time to play with it. As I’m starting some developments with STM32 it’s time to do it. I’ve tried to do some stuff using it at reception but even if there is some kind of Arduino mentions on the package the start is not as easy as on Arduino. Not regarding coding (it is more complicated but it is not the problem) but regarding the development environment. You need to use different tools and find yourself the way to use each of them. In my point of view ST would do a good thing simplify all this stuff. So in this post I’ll describe how to get started by creating your first led blink project. Hope it will save your time.