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DevOps

Envoy Service Mesh Case Study: Mitigating Cascading Failure at Lyft

Over the past four years, Lyft has transitioned from a monolithic architecture to hundreds of microservices. As the number of microservices grew, so did the number of outages due to cascading failure or accidental internal denial of service. Today, these failure scenarios are largely a solved problem within the Lyft infrastructure due to the use of the Envoy Proxy as a service mesh.

Daniel Hochman Jose Nino
on Aug 09, 2018
Cloud

The Cloud Native QA

The advent and widespread adoption of the cloud ecosystem presents a new challenge to the modern-day QA. What does it mean to be QA in a Cloud Native software business?

Greg Simons
on Aug 08, 2018
Culture & Methods

Q&A on the Book Enterprise Agility

The book Enterprise Agility by Sunil Mundra aims to make you think about organizations as living systems that thrive on fast paced change. It’s intended for leaders, managers, and coaches, who want to improve the agility of their organization and develop the personal traits that enable change.

Ben Linders Sunil Mundra
on Aug 07, 2018
Emerging Technologies

Evaluating Hyperledger Composer

Hyperledger Composer is a new open source project which makes it easy for developers to write chaincode for Hyperledger Fabric and the decentralized applications (DApps) that can call them. This article summarizes a technical evaluation of the performance characteristics of using Composer in a test application.

Glenn Engstrand
on Aug 06, 2018
Architecture & Design

Agile: Reflective Practice and Application

We explore how successful software development is based on the following three intertwining thought processes: Systems Thinking, Community Context and Reflective Practices. A majority of unsuccessful transformations result from a failure by members of the team to grasp that they are contributing to a larger system, or an unwillingness to learn how to improve, or that software is a team sport.

John Yorke
on Aug 04, 2018
Architecture & Design

Q&A on the Book "Microservices, a Practical Guide, Principles, Concepts, and Recipes"

The book “Microservices, a Practical Guide, Principles, Concepts and Recipes” by Eberhard Wolff explores technology stacks for microservices-based architectures that can be used on the implementation decisions at the overall system level. Targeted to architects, developers and operations, it provides a set of recipes along with executable samples that can be used to address different needs.

Rui Miguel Ferreira Eberhard Wolff
on Aug 03, 2018
Architecture & Design

PSD2: Blessing or Curse for Banks?

PSD2 will force all European banks to offer three APIs (Accounts, Transactions and Payments) free of charges to all 3rd parties approved by the ECB. This will allow new players to bring new and innovative products to the financial sector. For a successful transformation into a digital company, banks must evolve on three axis: Culture & People, Technology & Skills and Technical debt management.

Pieter De Rycke
on Aug 02, 2018
Development

Key Takeaway Points and Lessons Learned from QCon New York 2018

This year, at the seventh annual QCon New York, we had in total 143 speakers across the 117 sessions, workshops, AMAs, Open Spaces and mini-workshops. Topics included containers and orchestration, machine learning, ethics, modern user interfaces, microservices, blockchain, empowered teams, modern Java, DevEX, Serverless, chaos and resilience, Go, Rust, Elixir, and security.

Abel Avram
on Aug 01, 2018
Java

Improving Testability of Java Microservices with Container Orchestration and a Service Mesh

In enterprise test scenarios, software needs to be tested in the same way as it will run in production. This article provides a practical demonstration of testing Java microservices that are running on Kubernetes with the Istio service mesh. K8s service abstractions enable mocking, and Istio enables us to re-route traffic and inject faulty responses or delays to verify our services' resiliency.

Sebastian Daschner
on Jul 31, 2018
Cloud

How Contract Tests Improve the Quality of Your Distributed Systems

Catching bugs at the end of a development cycle is costly, but how do you incrementally test complex distributed systems? In this article, Marcin Grzejszczak looks at an integration testing approach for communication between components. He reviews contract testing, and Spring Cloud Contract, as one solution.

Marcin Grzejszczak
on Jul 29, 2018
Culture & Methods

Agnostic Agile: The Key to a Successful Lean Agile Transformation

Agnostic Agile principles facilitate and accelerate both the organization’s transformation as well as its Lean Agile evolution. Internalizing the Lean Agile Values and Principles are key to a successful Lean Agile transformation. Organizational complexity demands a multi-framework approach. A dogmatic, prescriptive approach to Agile is not only dangerous but is not Agile at all.

Tim Guay
on Jul 27, 2018
AI, ML & Data Engineering

Understanding Software System Behaviour with ML and Time Series Data

David Andrzejewski presented "Understanding Software System Behaviour with ML and Time Series Data". This article is a summary of his presentation and an overview on what to look out for. Know about the traditional approaches to time series, how to handle missing values, and know about possibly occurring seasonality in your data. Be careful about what threshold you set for anomaly detection.

Roland Meertens
on Jul 26, 2018