A while ago, we wrote a post describing how to protect your service with a throttling mechanism. That mechanism uses Redis database to synchronize statistics between service’s hosts. Redis is offered by AWS as part of AWS ElastiCache Service. If you remember, we promised you that we’ll describe how to connect to an AWS Redis […]
Category: Tips and tricks
Don’t touch AWS resources you haven’t created!
In this blog post we want to share with you a golden rule we have confirmed recently: don’t touch resources created by other services. Or to be more concrete about our today subject: don’t touch S3 buckets that appear in your console, but which have been created by other services. AWS S3 is one of […]
Alarming on low traffic
Today we are going to tell with a real story from which we learned something: recently, one engineer from our team changed how client profiles are loaded from database. It doesn’t matter how, but a bug was introduced and a premium client was affected, being classified as free tier client. The result: almost 80% of […]
How to access production endpoints
Let’s consider that we have a service that runs in a virtual private cloud and from our desktop we cannot access its endpoints. But sooner or later we want to execute some calls to fetch some data or to troubleshoot something. What’s the solution in that case? The simplest approach is to create a tunnel […]
Sharing Beanstalk applications between different AWS accounts
An essential good practice is to have distinct AWS accounts for testing and running code into production. This approach increases the costs transparency, offers a better security, and decreases the chances to occur a human error on production environments, so apparently anyone should apply it. But a trivial setup lack could stop to use it. […]
How to set system properties for a Lambda function written in Java
AWS Lambda, like other environments, doesn’t make accessible the command line used to start the Java virtual machine. Thus, it’s a little bit more complicated to add the running options to your application or the input parameters, specified as environment variable, or, preferable, system properties. More details about these 2 concepts are available in the […]
Running an application with different code versions
There are circumstances like deploying a critical code change into production or running an AB test when running the same application with different code versions is a need. Is this possible when your application is running in Elastic Beanstalk? By default, not, but there is a work around that we’ll describe below. The classic way […]
Client Configuration tips and tricks (2)
After we went through the most important moments through the history of AWS, we presented several methods about how to adjust configuration settings for an AWS client. In this post, we’ll continue on the same line and we’ll discuss about how to handle failed requests. We know it sounds like a boring topic, we know […]
Client Configuration tips and tricks (1)
There are multiple ways you can interact with Amazon Web Services: AWS Management Console – a web application that offers an interactive user interface, allowing to perform many AWS task, such as launching an EC2 instance, creating a DynamoDB table, and so on. AWS Command Line Interface – a tool that offers a very powerful […]