How-Tos

Spark tutorial: Get started with Apache Spark

A step by step guide to loading a dataset, applying a schema, writing simple queries, and querying real-time data with Structured Streaming

How to implement a custom exception class in C#

Take advantage of custom exception classes to extend error handling or add meaningful information to the errors thrown by your .Net applications

How to improve your scrum master skills

Building your scrum master skills leads to a several career opportunities. Here are the skills that will take you to the next level

How to improve your scrum master skills

Building your scrum master skills leads to a several career opportunities. Here are the skills that will take you to the next level

Real-time machine learning with TensorFlow, Kafka, and MemSQL

How to build a simple machine learning pipeline that allows you to stream and classify simultaneously, while also supporting SQL queries

How to avoid memory leaks in .Net applications

Learn the causes of memory leaks in .Net, how to detect them, and how avoid them in your applications

How to secure ASP.Net Web APIs using authorization filters

Take advantage of ASP.Net Web API authorization filters to authorize incoming requests to your web API

How to implement a simple logger in C#

It's easy to create a custom logging framework to log your .Net application's errors and events to a flat file, a database, or the event log

Data structures and algorithms in Java, Part 2: One-dimensional arrays

Get started with one-dimensional arrays and array variables, then try out five algorithms for searching and sorting arrays in your Java programs

How to work with logging in ASP.Net Core

Take advantage of ASP.Net Core's flexible, customizable and extendable Logging API to plug in a custom logger with ease

R tutorial: Learn to crunch big data with R

Get started using the open source R programming language to do statistical computing and graphics on large data sets

Get started with Microsoft’s Azure IoT DevKit

Add machine learning and stream analytics to your internet of things prototypes, even if they don’t run Windows

Testing with the InMemory provider in Entity Framework

How to use the InMemory provider in Entity Framework Core to test your methods without hitting the database or using fakes and mocks

How to use dependency injection in ASP.NET Core

Take advantage of dependency injection in ASP.NET Core to plug in components and improve code maintenance and testability

Programming with Java APIs, Part 1: OpenAPI and Swagger

Get started with API-driven development for cloud and microservices architectures

How to use in-memory caching in ASP.NET Core

Take advantage of in-memory caching in ASP.NET Core to improve the performance and scalability of your application

Awless tutorial: Try a smarter CLI for AWS

A guided tour of the Awless CLI for Amazon Web Services, an alternative to the AWS CLI with simpler syntax, smart defaults, and powerful templates

How to transfer your datacenter’s data to Azure

Hybrid applications need dedicated connectivity and new ways of getting data from your datacenter to the cloud

When to use the volatile keyword in C#

How to take advantage of the volatile keyword in C# to ensure that concurrent threads get the latest value of an object

Web services in Java SE, Part 4: SOAP with Attachments API for Java

Learn about SAAJ and other advanced Java SE Web service features

How to perform lazy initialization in C#

Use lazy initialization to save resources and improve performance by deferring the initialization of expensive objects until they're requested

How to set up Zeppelin for analytics and visualization

The open source notebook for analytics and visualization is highly capable. Here’s how to get it up and running in Amazon’s EC2

Manage access control using Redis Bitfields

How to create a high-performance, highly available, and flexible access control system using binary data and bitwise operators in Redis

How to work with MongoDB in .NET

Get started with documents and collections in the popular, open source, NoSQL database using C#

10 tips for better search queries in Apache Solr

Get started with Solr’s specialized search query functions such as filter queries and faceting

How to work with Elasticsearch in .Net

Take advantage of the open source search engine using C# to search and analyze your application’s data in real time

Windows Amazon EC2 tutorial: How to set up an EC2 instance

EC2 has changed quite a bit in the last five years, so whether you are new to EC2 or an old hand, it’s worth a look at how to launch your own EC2 instances today

How to use the object pool design pattern in C#

Boost application performance by using the object pool design pattern to recycle objects that are expensive to create

Web services in Java SE, Part 3: Creating RESTful Web services

Learn how to create RESTful-based Web services

Linux Amazon EC2 tutorial: How to set up an EC2 instance

EC2 has changed quite a bit in the last five years, so whether you are new to EC2 or an old hand, it’s worth a look at how to launch your own EC2 instances today

How to get started with Akka.Net

Take advantage of Akka.Net to build concurrent, fault tolerant, event-driven applications using the high-level abstractions of the actor model

How to speed your code using CPU caches

Techniques include using cache-friendly structs provides a huge performance gain

Build an app with Flask and Oracle Mobile Cloud Service

A step-by-step guide to defining an API with Flask and deploying to Oracle’s mobile back end as a service

Web services in Java SE, Part 2: Creating SOAP web services

Learn how to create SOAP-based Web services

How to move into a cloud career from traditional IT

From architects to developers, there is a path from traditional IT to the gold-plated jobs in the cloud

How to use Apache Kafka messaging in .Net

Take advantage of the fast and scalable open source message broker to meet high-volume data processing challenges on Windows

Data structures and algorithms in Java, Part 1: Overview

Get an overview of data structures and algorithms and how they work together in your Java programs

How to (not) use the large object heap in .Net

Understand why the large object heap in .Net is prone to fragmentation and how to use memory more efficiently

How to log request and response metadata in ASP.NET Web API

Take advantage of a custom message handler to log request and response metadata in Web API for debugging, tracing, and inspection of the incoming and outgoing calls

How to write performance tests using NBench

Take advantage of NBench to analyze code throughput, memory allocations, and GC overhead in your .NET application

Web services in Java SE, Part 1: Tools overview

Learn all about Web services and how they work in Java SE

21 rules for faster SQL queries

Follow these tried-and-true techniques to improve the speed and scalability of your relational database

How to make your Web API responses consistent and useful

A custom wrapper for your Web API responses can provide meaningful information and ensure consistency regardless of success or failure.

How to do partial updates to REST API resources

Take advantage of HTTP PATCH to partially update resources and transfer less data over the wire

How AWS Lambda’s serverless functions work

A first-hand, step-by-step look at the ease and simplicity of Amazon's "function as a service" platform

Why serverless? Meet AWS Lambda

A first-hand, step-by-step look at the ease and simplicity of Amazon's "function as a service" platform

Java library evolution and other puzzlers

How to use the mediator design pattern in C#

Take advantage of the mediator design pattern to promote loose coupling and simplify the coding of object interactions

The rules for REST: How to be RESTful in HTTP/JSON APIs

It’s easy to get sloppy in your APIs, so here’s a refresher on how to be correctly RESTful in your client scripts

How to use correlation IDs in ASP.Net Web API

Take advantage of the built-in correlation IDs in Web API to track HTTP requests that flow through multiple back-end services