The problem When a software handles multiple concurrent operations an entire class of problems arises. In our case multiple requests would try to update centralized information leading to unique constraint violations at the database level. That was because the code would check if an entity to update already existed and…
Introduction Inversion of control seems to be a tricky topic among developers and every developer declins it in its own way. Searching on the web it seems that first usage of this term – that is not a pattern, rather a concept or a metodology – is attributable to Michael Mattson,…
In this article we will describe how we have automated a workflow thanks to the services managed by Amazon AWS. This has allowed us to have a unique and centralized service that can be managed by anyone. Let’s come to the problem. To manage hundreds of DNS zones for our…
You all, at some point, faced the necessity to compare old and new values when storing an entity. Here is where Doctrine EntityListener comes at help. Let imagine you have this User entity
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<?php namespace App/Entity; class User { /** @var string $email */ private $email; public function getEmail(): string { return $this->email; } } |
and you want to notify the user when the email address has been changed. All you…
Ancora ricordo il mio primo approccio a npm ed al suo modo di gestire packages: ogni volta che bisognava installare qualche cosa relativo al workflow di un progetto era un semplice npm install -g nome-package e come per magia il comando relativo era disponibile nel terminale. Questo è un approccio sicuramente…
Il Page Object è un pattern utilizzato nei functional test per astrarre l’interazione con gli elementi della UI. All’interno di un oggetto vengono incapsulate le interazioni e le funzionalità di una pagina web che vengono esposte tramite api, nascondendo la struttura degli elementi HTML all’esterno. Per approfondire il concetto rimando…
Well. As the title says, let’s talk about a script: scripts that run in the NPM ecosystem. In a developer’s work path it is very common to find yourself repeating tasks like deleting temporary files, minify and bundling your Javascript source code, preprocessing Sass files, and so on. NPM scripts…
When we started developing Lambda functions to automate processes, or simply to delegate various jobs, compared to our infrastructure, we faced the problem of how to handle the deploy of functions and maintain the versions of this code. There are many frameworks, more or less useful and well done, but…
In some circumstances knowing how to generate a criptographically secure random string could avoid to introduce a security breach in your application. If you want to create a random password for a new user or a cryptographic key, you’d better use a strong algorithm which guarantees unpredictable values. But first…
Negli ultimi anni, gli amministratori di sistema sempre più spesso sentono l’esigenza di trovare strumenti per difendersi da attacchi DoS o DDoS. La diffusione di questo tipo di attacchi in futuro sarà sempre maggiore al crescere della capacità di banda delle connessioni casalinghe e non solo, ma anche per il…