In the beginning of time RPC (Remote Procedure Calls) was the standard way of communicating between remote services. Some time passed and REST (REpresentational State Transfer) took over as the king. REST and JSON became popular because they made it easy to understand the communication between clients and servers, since JSON is easy for humans to read. With the rise of Microservices and systems that are increasingly chatty, JSON became a considerable overhead. Transmiting data in a human read...| ncona.com
gcloud-sdk At the time of this writing, there is no official Google Cloud library for rust. Google started working on google-cloud-rust, but it’s still under development. The most popular alternative seems to be gcloud-sdk, so that’s what we’ll be using. This SDK uses tonic to build the gRPC clients, so a little familiarity with tonic, might be helpful. Since we are going to focus on the Storage API, we need to add this dependency to our Cargo.toml file: 1 gcloud-sdk = { version = "0.27...| ncona.com
A few years ago I wrote an article explaining Protocol Buffers, gRPC, and showing how to use them with Java. In this article, I’m going to show how to build the same server and client, but this time with Rust. Project structure There are going to be 3 parts for our example: Proto files Server Client We’ll have a root folder and then a folder for each part: 1 2 3 4 / ├── client ├── protos └── server| ncona.com
In this article, we are going to show how to get started with Geospatial data in PostgreSQL. More specifically, we are going to learn how to store spatial information (e.g. Coordinates in a map) and how we can index and perform searches on this data (e.g. Find all coordinates inside a given area). Installing PostGIS PostGIS is an extension of standard PostgreSQL that allows us to work with geospatial data. This means, if the extension is not present, we won’t have these capabilities. To che...| ncona.com
In this article, we are going to learn how to write software that uses configuration files using ESP-IDF. Kconfig Kconfig is the configuration system used by the Linux kernel and by ESP-IDF. It allows management of project settings through a structured and hierarchical menu system. It allows developers to write configuration files that specify the available configuration options for a piece of software.| ncona.com
In this article, we are going to explore how the clipboard works when using different tools inside a terminal and how we can configure these tools so we get and intuitive experience. Linux The most basic example of using the clipboard would be using it directly from the operating system. Most Linux distributions come with a built-in clipboard. This clipboard works as a temporary data storage that can hold a single item. To add an item to the clipboard, we can select it, right click it and sel...| ncona.com
Internationalization is the process of making a website that is adaptable to different locales (regions or languages). Translation is a large part of it, but there are other aspects, like date formatting, for example. There is no single standard way to do internationalization. In this article we’ll learn the approach I chose, but there are other ways to achieve a similar result. URLs To make an internationalized app SEO friendly, it’s recommended to have locale-prefixed URLs. This means, ...| ncona.com
In a previous post, we learned about asynchronous programming with Tokio. This time, we are going to use Axum to build a server that uses Tokio as runtime. Hello world Creating a simple server with Axum only requires a few lines: 1 2 3 4 5 6 #[tokio::main] async fn main() { let app = Router::new().route(| ncona.com
I’m working a project that uses Firestore, so I’m using the firestore crate to help me interact with my database. There are two examples showing the use of transactions in the source code: transactions.rs read-write-transactions.rs There are some parts of those examples that are a little confusing, so I’m writing this article to try and shed some light. I was not the only one confused by this, and luckily someone brought this up in a Github issue before I had to.| ncona.com
Unrecoverable errors These errors are a sign that the developer made a mistake. An example of this, could be trying to access an index that is out of bounds. For example: 1 2 3 4 5 6 7 8 fn get_number() -> usize { return 5; } fn main() { let numbers = [1, 2]; println!(| ncona.com
I’m building a little web server with Rust and as part of it, I’m going to need to send some e-mails to my users. I found a few services that offer an e-mail API with a free tier, and decided to go with Brevo. Authenticating our domain In order for our e-mails to reach our users’ inboxes, we need to correctly configure our DKIM and DMARC records so they can be used by Brevo. We can’t authenticate e-mails from free email providers like Gmail. So, before we can authenticate our domain, ...| ncona.com
If you are interested in learning about asynchronous programming in more depth, I recommend reading Asynchronous Programming in Rust. Asynchronous programming When we run code that makes network requests, these request are sent through the network. Sending the request and waiting for the response is done by the network peripheral and doesn’t require the CPU. This means, the CPU is free to do other things while it waits. Code written synchronously will send a request and then block the threa...| ncona.com