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Mariano Calandra
AWS Authorized Instructor • AWS Community Builder
Mariano works in Claranet, where he helps companies succeed using cloud and microservices.
Latest articles
Five books every serverless developer must read
So here’s the thing: you are an experienced developer thrilled by the opportunities of serverless architectures. You read books, watch any possible video courses but when it comes to starts building a real serverless solution you feel completely nake...
How chaos engineering will help you design better software
For years we have tried to avoid mistakes, when in fact we should have caused them.
What Is Amazon Cognito User Pool and How Does It Differ From a Cognito Identity Pool
Amazon Cognito is an AWS service that lets you easily add users’ management to web and mobile apps. It supports social identity providers, such as Facebook, Google and enterprise identity providers via SAML 2.0. A powerful service. At first, hard to...
How to Protect APIs Using Amazon Cognito User Pool
Amazon API Gateway is a fully managed service that makes it easy to handle REST APIs. The main task of this service is to bind an HTTP endpoint to a given backend service, like a Lambda function. Fig.1 – Business logic exposed as REST API using Amazo...
The simple cure for AWS Lambda lock-in fear
For those of you who might not be familiar with, AWS Lambda is a service platform that let us run our code without provisioning or managing servers. We just upload the source code and the platform takes care of everything required to run and scale it...
Why unit testing is not enough when it comes to microservices
Wise men say that the whole is greater than the sum of its parts. In a microservice architecture, we could be tempted to unit testing the single services, forgetting these are just parts of the system. With good reason, unit tests are seen as a guidi...
How to protect APIs with JWT and API Gateway Lambda Authorizer
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a way for transmitting information – like authentication and authorization facts – between two parties: an issuer and an audience. Communication is safe because each token issued is dig...
Why do we need the JSON Web Token (JWT) in the modern web?
Hold on tight: the HTTP protocol is terribly flawed and when it comes to user authentication this problem screams loudly. For a long time we, as developers, fought with it: sometimes with good results, sometimes not, but we thought we were happy. Unf...