There are several options to deploy a Kubernetes cluster, including public cloud, private cloud, and a homegrown solution either on-premises or in the cloud.
This post will highlight the hidden costs of the homegrown management of a Kubernetes cluster.
What Is a Network Source of Truth?
A network source of truth is a centralized repository of accurate, up-to-date information about the configuration and status of all the devices, connections, and services within a network
Introduction Deploying code while working in a team can be tricky. If you have multiple developers working on the same repository orchestrating the feature release becomes problematic. Teams usually ask themselves whether a they can deploy to production their current dev branch and whether such a deploy process will be safe and won’t break existing features and/or introduce non working untested new features to the production environment. Features flags can be a mechanism that allow safe deployment of entire branches thus reducing the lead time of features from the developer’s laptop to …
Introduction In recent years, big data has taken the world by storm. Legacy relational database storage on premises has been transformed into complex cloud systems with multiple databases, NoSQL databases, ingestion engines, and so forth. In this post, I’ll explain big data architecture and how it differs from legacy database architecture and describe the different types of big data architectures. What Is Big Data? Legacy Systems Big data refers to extremely large and complex data sets that cannot be effectively processed or analyzed using traditional data processing tools and techniques. When we …
Databases power all modern applications. They’re behind your Angry Birds mobile game as much they’re behind the space shuttle. In the beginning, databases were hosted on a signal physical machine. Basically, it was a computer running only one program: the database. Then we moved to running databases on virtual machines, where resources are shared among multiple operating systems and applications. In recent years we moved to running databases in the cloud. And we no longer use a single database instance to store the data. Modern database systems are spread across multiple computers …
Databases power all modern applications, from banking and ATM software to space shuttle systems and your Angry Birds game. Wherever you go, you will find databases. The most common databases used today are relational or SQL databases, where data is stored in interconnected tables. In turn, you can query those tables using a query language that resembles plain English, Standard Query Language (SQL). To get the most value of the SQL databases you use as a developer, system administrator, or database administrator, it’s vital that you have visibility into what’s going on. …
Introduction Around 30 years ago, a server was usually a standalone PC or mainframe that provided only one service. Think of a dedicated mainframe for emails, for instance. Things evolved from this to single standalone hardware that provides multiple services (email, http, ftp combined, for example) through virtual machines that can host multiple operating systems running dozens of services, and up to today, where servers are software defined and can run on anything from your washing machine to a drone. What Is Server Management Software? Even in the scenario of a single …
Introduction Engineering is the department in the organization that actually builds the product that the enterprise sells. In the world of the knowledge worker, employees don’t stand near the assembly line tightening screws. The modern knowledge worker is a software developer who creates products using code. The role of the engineering manager, likewise, doesn’t resemble the worker of an overseer or foreman in a factory. This post is about what an engineering manager does and what exactly their role is in the department in particular and in the enterprise in general. Beginnings …
An API is essentially a tool to provide an interface for the client with the software—that’s what they do. Some of the API methods modify application state and some return data to the client. Further, some methods can do both. Once we return data to the client, we need to make sure that we return only what’s necessary and don’t expose any sensitive information. This post will cover excessive data exposure in APIs with examples and prevention methods. The examples will be given in the context of the Java Spring framework. REST …
Testing is an integral and vital part of creating software. In fact, test code is as important as your production code. When you create test code, you need to generate test data for your code to work against. This post is about the different types of test data that are used in software testing. I’ll elaborate on each type and explain what test types are used in which scenarios. Types of Test Data Valid Data As the name implies, this is the data that your program expects and should operate on. You …