Publications de Erwan Alliaume

We have already presented Hashicorp Vault on this blog, how it is working in PKI mode (FR), its integration with AWS (FR) and with Kubernetes (FR). This time we will focus on another Vault goodness: how to use Vault to manage your SSH accesses in your infrastructure.To do that, we are going to use in the article the SSH Secret Engine provided by Vault..

Documented in 2005 by Alistair Cockburn, Hexagonal Architecture is a software architecture that has many advantages and has seen renewed interest since 2015. The original intent of Hexagonal Architecture is: Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases. To explore the benefits of piloting an application by automated tests, or developing and testing in isolation from the database, we recommend that you read…

The serverless brings many benefits for the deployment of web applications such as autoscaling, availability and having a very fine granularity on costs (billing per 100ms for AWS lambda). And of course the absence of server management (installations, patches,...). This article makes an inventory of the cold and warm start call metrics with AWS Lambda with different code implementations. Serverless is an ambiguous term that implies that there are no more servers: this is not the case! The term adapted could have been server[management]less but…

It is the morning, at dawn, before the fortifications. Men are ready. For some time now, things have been moving with small changes, from here to there. The foundations are cracking, challenging them. Moreover, some have already made the leap. Others hesitate. The question is no longer about whether one is doing it, or if one is resisting, but rather when will one go. All these developments converge to the same goal: a new revolution in information technology.

For years now, any process running in parallel of others has required a dedicated thread. We believe this paradigm to be outdated.

Having written about monitoring flow and best practices for setting it up, let's move onto a practical example. We'll define a mini-information system combining services and messages, then we will show how to monitor it, including technical explanation and the full code.

Having an efficient flow monitoring is critical: integrating all data flows, it offers an overall view of the entire Information System. This article aims to help you compare your current system with generally observed good practices and provides you with suggestions to improve it.