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Deliver SaaS According Twelve-Factor App

If you haven't heard of  the twelve-factor app , it gives us a recommendation or a methodology for developing SaaS or web apps structured into twelve items. The recommendation has some connections with microservice architecture and cloud-native environments which become more popular today. We can learn the details on its website . In this post, we will do a quick review of the twelve points. One Codebase Multiple Deployment We should maintain only one codebase for our application even though the application may be deployed into multiple environments like development, staging, and production. Having multiple codebases will lead to any kinds of complicated issues. Explicitly State Dependencies All the dependencies for running our application should be stated in the project itself. Many programming languages have a kind of file that maintains a list of the dependencies like package.json in Node.js. We should also be aware of the dependencies related to the pla...

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Configuring Swap Memory on Ubuntu Using Ansible

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Free Cloud Services from UpCloud

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As I have been working on many software projects and teams, I see that sharing credentials among developers is a common thing. Sometimes, developers store credentials in a file where everyone in the team can access them just to streamline the development process. But, I was also wondering how to maintain the security of the software or data managed while the credentials are accessible to everyone. How can we monitor the usage, make sure that no one in the team uses the credentials differently than they're supposed to be, or renew the credentials with ease? Hashicorp Vault is one of the solutions in the market that can answer that question. There are three main problems that Vault solves. The first is called secret sprawl where the credentials are spread everywhere to many individuals. Then, it becomes difficult when someone leave the team and we have to renew the existing credentials to secure the access. Vault can provide a mechanism to centralize the credentials storage, p...