Mahdi Azarboon | The Blog Pros

June 25, 2019

Demystifying Lambda in VPC and Its Confusing Error

Suddenly, my AWS Lambda function stopped working. Upon invocation, not a single line of code was executing, and I was just getting this error from the console:

"Calling the invoke API action failed with this message: Lambda was not able to access EC2's API using the Lambda Execution Role to set up the Lambda function."

March 4, 2019

Lessons Learned from A Legacy Serverless App

Keeping in mind the growing multi-cloud trend, developers should start working with more than one provider. However, this can mean leaving your comfort zone, and not everyone likes the idea of doing that. Recently, I’ve done this and would like to share my experiences with you. I believe they are useful, regardless of whatever cloud platform you are using/are going to use.

We have a legacy serverless application hosted on Azure Functions. There were some issues with it:

GBase 8a Implementation Guide: Resource Assessment
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1. Disk Storage Space Evaluation The storage space requirements for a GBase cluster are calculated based on the data volume of the business system, the choice of compression algorithm, and the number of cluster replicas. The data volume of a business s... […]
A Look Into Netflix System Architecture
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Ever wondered how Netflix keeps you glued to your screen with uninterrupted streaming bliss? Netflix Architecture is responsible for the smooth streaming experience that attracts viewers worldwide behind the scenes. Netflix's system architecture emphas... […]
High Availability and Disaster Recovery (HADR) in SQL Server on AWS
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High Availability and Disaster Recovery (HADR) play a vital role in maintaining the integrity of data, reducing downtime, and safeguarding against data loss in enterprise database systems. AWS offers a range of HADR options for SQL Server, which levera... […]
Terraform Tips for Efficient Infrastructure Management
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Terraform is a popular tool for defining and provisioning infrastructure as code (IaC), improving consistency, repeatability, and version control. But you need to know how to use it properly to extract maximum value from it as an infrastructure managem... […]
Integration Testing With Keycloak, Spring Security, Spring Boot, and Spock Framework
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In today's security landscape, OAuth2 has become a standard for securing APIs, providing a more robust and flexible approach than basic authentication. My journey into this domain began with a critical solution architecture decision: migrating from bas... […]