The Netflix TechBlog

FEBRUARY 9, 2022

The important thing is that this business logic can be built in a separate repository and maintained independently from the workflow definition. ACID deployment : for every scheduler workflow definition change, we would like to have all the workflow assets bundled in an atomic, durable, isolated and consistent manner.

Storage 213

Storage Data Engineering Testing Code 213

Dynatrace

JANUARY 17, 2022

A new preview section enables you to test the definition iteratively against actual values before creating the SLO. On the Service-level objectives page, the Actions > Edit SLO entry has been renamed SLO definition. With Dynatrace Managed version 1.228, the new version of Log Monitoring is available.

Metrics 209

Metrics Monitoring Availability Testing 209

Percona

SEPTEMBER 19, 2023

It looks like we succeeded, and I’m happy to announce that Percona Distribution for PostgreSQL 16 is now available! The effort has definitely paid off, as we can release shortly after upstream. We plan to make Percona images for PostgreSQL available on Docker Hub shortly. The plan is to start with version 16.

Availability 115

Availability Open Source Database Servers 115

The Netflix TechBlog

JULY 22, 2024

It supports a wide range of workflow use cases, including ETL pipelines, ML workflows, AB test pipelines, pipelines to move data between different storages, etc. A workflow definition is defined in a JSON format. A Maestro workflow definition comprises two main sections: properties and versioned workflow including its metadata.

Strategy 260

Strategy Scalability Code Engineering 260

Dynatrace

MAY 19, 2022

This helps SRE teams quickly mitigate issues by turning off poorly-performing features, enabling features for specific subsets of end-users, or performing side-by-side A/B feature testing. Feature flag solutions currently use proprietary SDKs with frameworks, definitions, and data/event types that are unique to their platforms.

Java 269

Java Cloud Code Technology 269

Dynatrace

JULY 16, 2021

This week my colleague Michael Winkler announced the general availability of Cloud Automation quality gates , a new capability that aims to provide answer-driven release validation as part of your delivery process. You run load tests monitored with Dynatrace and you want to automatically validate to eliminate the manual analysis effort.

DevOps 246

DevOps Open Source Cloud Azure 246

The Netflix TechBlog

JULY 30, 2019

This allows us to proactively push changes to the open source version while ensuring that the changes are fully functional and well-tested. Adoption As of writing this blog, Conductor orchestrates 600+ workflow definitions owned by 50+ teams across Netflix. The ability to dynamically create and execute workflows removes this friction.

Lambda 192

Lambda Media Open Source Metrics 192

O'Reilly Software

MARCH 1, 2018

This information is curated from the expert microservices material available on our online learning platform. Sam Newman provides a succinct definition of microservices in Building Microservices : “Microservices are small, autonomous services that work together.”. Continue reading Microservices: A quick and simple definition.

Architecture 80

Architecture Scalability Systems Code 80

Dynatrace

APRIL 10, 2020

Dynatrace also alerted on intermittent outages throughout the day and especially after 8pm when the bulk of the nightly jobs were executed: On March 31st our Jenkins violated our SLAs from both availability and user experience. Step #3 – Removing the offending plugin. As the plugin wasn’t needed anymore, it was an easy decision to remove it.

Java 259

Java Performance DevOps Engineering 259

Dynatrace

MAY 12, 2022

The title size of a tile has been moved from the dashboard definition to the dashboard metadata definition and included in the advanced settings UI for dashboards. General Availability (Build 1.241.153). General Availability (Build 1.241.153). Dashboards. Dynatrace API. Dynatrace API. Resolved issues. Resolved issues.

Tuning 205

Tuning Metrics Cloud Mobile 205

The Netflix TechBlog

FEBRUARY 3, 2021

Instead, the schema gets generated at runtime based on definitions in code. Comprehensive documentation is available on the website but let’s walk through an example to show you how easy it is to use this framework. Another key feature is support for lightweight query tests. The tests look and feel like plain JUnit tests.

Open Source 246

Open Source Java Architecture Metrics 246

DZone

FEBRUARY 27, 2021

As a Software Engineer, the mind is trained to seek optimizations in every aspect of development and ooze out every bit of available CPU Resource to deliver a performing application. Input The input will contain several test cases (not more than 10). Each test case is a single line with a number n, 0 <= n <= 1 000 000 000.

Java 214

Java C++ Benchmarking Programming 214

The Netflix TechBlog

JUNE 13, 2023

Migrating Critical Traffic At Scale with No Downtime — Part 2 Shyam Gala , Javier Fernandez-Ivern , Anup Rokkam Pratap , Devang Shah Picture yourself enthralled by the latest episode of your beloved Netflix series, delighting in an uninterrupted, high-definition streaming experience. This is where large-scale system migrations come into play.

Traffic 287

Traffic Metrics Systems Strategy 287

Alex Podelko

AUGUST 24, 2017

There was a rather heated discussion around A Context-Driven Approach to Automation in Testing by James Bach and Michael Bolton (referred below as the article and the authors – other references would be explicit). and Open letter to “CDT Test Automation” reviewers as well as in many other different places.

Testing 140

Testing Performance Performance Testing Testing Tools 140

The Netflix TechBlog

FEBRUARY 16, 2021

Operational Efficiency: The majority of the changes require metadata configuration files and library code changes, usually taking days of testing and service release to adopt the updates. Overall, it simplified SKU selections and increased our testing and product delivery confidence.

Mobile 220

Mobile Engineering Infrastructure Scalability 220

Dynatrace

JUNE 15, 2021

The subject line said: “Success Story: Major Issue in single AWS Frankfurt Availability Zone!” The problem started at 1:24PM PDT, with the services starting to become available again about 3 hours later. Those tests get executed from two locations (Paris and London) hosted by different cloud vendors (Azure & AWS).

AWS 202

AWS Traffic Architecture Azure 202

Dynatrace

SEPTEMBER 28, 2021

While DevOps is often referred to as “agile operations,” the widely quoted definition from Jez Humble, co-author of The DevOps Handbook, calls it “a cross-disciplinary community of practice dedicated to the study of building, evolving, and operating rapidly-changing resilient systems at scale.” Change failure rate.

DevOps 213

DevOps Metrics Traffic Efficiency 213

CSS Wizardry

DECEMBER 9, 2023

Always force HTTPS when it’s available. Connection overhead isn’t huge , but too many preconnect s that either a) aren’t critical, or b) don’t get used at all, is definitely wasteful. Note that the BBC use schemeless URLs (i.e. href=//… ). I would not recommend doing this. For example, let’s take a look at the BBC’s box.css.

Speed 280

Speed Network Analytics Availability 280

CSS Wizardry

AUGUST 14, 2024

WebKit have recently announced their intent to implement the blocking=render attribute for and elements, bringing them in line with support already available in Blink and generally positive sentiment in Firefox. A/B Testing and Experimentation blocking=render ’s application in client-side A/B testing is, for me, its most compelling use-case.

C++ 260

C++ Testing Tools Government Testing 260

Dynatrace

DECEMBER 6, 2022

But, manual steps — such as reviewing test results and addressing production issues resulting from performance, resiliency, security, or functional issues — often hinder these efforts. As two examples, Roman Ferstl of Triscon noted that observability-driven DevOps has helped clients achieve 15x more tests with 10x more apps tested.

DevOps 230

DevOps Metrics Engineering Speed 230

Dynatrace

JULY 30, 2021

The first hands-on session is easy to accomplish the 5-minute success challenge, but things heat up in our second session as we walk attendees through either Codifying the SLOs in YAML or using a Dashboard-based definition approach. This is where the dashboard-based quality gate definition comes in. Hands-on 2: Codify your SLOs.

Cloud 214

Cloud DevOps Azure Virtualization 214

Dynatrace

OCTOBER 4, 2021

Modern applications—enterprise and consumer—increasingly depend on third-party services to create a fast, seamless, and highly available experience for the end-user. If this were the case, IT teams would need to plan to migrate to the newest available version of that API. API testing complements monitoring. Dynatrace news.

Monitoring 190

Monitoring Latency Metrics Availability 190

Dynatrace

MARCH 16, 2021

We’re excited to announce our verified HashiCorp Terraform integration is now available for Dynatrace customers. Per HashiCorp, this codification allows infrastructure changes to be automated while keeping the definition human readable. Dynatrace news. Terraform codifies cloud APIs into declarative configuration files.

Code 245

Code Monitoring Best Practices Infrastructure 245

Percona

JUNE 30, 2023

Percona, a leading provider of open-source database software and services, announced the general availability of Percona Operator for PostgreSQL version 2. IT teams must ensure high availability, scalability, and security, all while ensuring that their PostgreSQL clusters perform optimally. In version 1.x,

Availability 100

Availability Open Source Azure Hardware 100

CSS Wizardry

NOVEMBER 9, 2018

This is definitely a bug in WebKit/Blink—missing quotes shouldn’t hide the @import ed stylesheet from the Preload Scanner. Test, test, test. Everything I have outlined above adheres to specs or known/expected behaviour, but, as always, test everything yourself. Test and measure.

Network 279

Network Performance Media Cache 279

Dynatrace

DECEMBER 10, 2021

For example, deploying, testing, validating, and releasing software are shared tasks across teams that differ mainly in the underlying tooling used for executing these tasks. Dynatrace Cloud Automation now enables you to implement process definitions that are tool agnostic. This is also the point of integration.

DevOps 195

DevOps Cloud Testing Tools Strategy 195

The Netflix TechBlog

AUGUST 22, 2019

Artisan Crafted Images In the Netflix full cycle DevOps culture the team responsible for building a service is also responsible for deploying, testing, infrastructure, and operation of that service. The configuration file, referenced scripts, and artifact dependency definitions all live in an internal git repository.

DevOps 211

DevOps AWS Tuning Infrastructure 211

Dynatrace

DECEMBER 13, 2024

Collector Custom Resource A custom resource (CR) represents a customization of a specific Kubernetes installation that isnt necessarily available in a default Kubernetes installation; CRs help make Kubernetes more modular. There are two versions available: v1alpha1 : apiVersion: opentelemetry.io/v1alpha1 spec.containers[*].name}'

Java 183

Java Servers Code Metrics 183

The Netflix TechBlog

OCTOBER 7, 2021

At Netflix, we have significant investments in ensuring new versions of our applications are well tested. However, Netflix is available for streaming on thousands of types of devices and it is powered by hundreds of micro-services which are deployed independently, making it extremely challenging to comprehensively test internally.

Metrics 209

Metrics Mobile Testing Strategy 209

Dynatrace

MARCH 27, 2024

Note that AWS AppFabric is available in the US East (N. You will see the ip, cidr and is_company_ip attributes added to the log entry. Follow the instructions here to deploy the Dynatrace AWS S3 Log Forwarder on your AWS Account.

AWS 255

AWS Analytics Monitoring Government 255

Scalegrid

JANUARY 20, 2020

This extra cluster, known as a follower cluster, can be leveraged for multiple use cases, including for analyzing, optimizing and testing your application performance for MongoDB , MySQL and PostgreSQL. The ‘follower’ system is writable, so you can use it as a staging environment to test your application changes. Data Analytics.

Analytics 185

Analytics Database Storage Systems 185

Alex Podelko

NOVEMBER 21, 2018

From load testing to DevOps. It appears that Apache JMeter became the most popular load testing tool. In 2014, I was preparing a presentation about load testing tools and criteria for their selection. Load testing is an important part of the performance engineering process.

DevOps 113

DevOps Testing Testing Tools Performance Testing 113

Testsigma

MARCH 12, 2021

Robotic Process Automation and Test Automation are two confusing terms in testing processes. Similar to TDD and BDD processes, RPA and test automation seem like a single branch of the test segment which is common to be exchanged in communication during planning. What is Test Automation?

Artificial Intelligence 97

Artificial Intelligence Testing Energy Analytics 97

Percona

APRIL 10, 2023

In this blog post, I’m going to present a new functionality that is available in MyDumper and will be available in the next release: we added the possibility to build random data based on a format that the user defines. Masquerade was one of these features, but it was only for integer and UUID values. How does it work?

Testing 113

Testing C++ Open Source Database 113

Alex Podelko

OCTOBER 28, 2016

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. Quite often the whole area of load testing is reduced to pre-production testing using protocol-level recording/playback. – Cloud.

Performance Testing 100

Performance Testing Technology Technology Testing 100

Dynatrace

DECEMBER 9, 2020

The flip side of speeding up delivery, however, is that each software release comes with the risk of impacting your goals of availability, performance, or any business KPIs. Typical Dynatrace use cases cover SLOs for service availability, web application performance, mobile application availability, and synthetic availability.

Metrics 158

Metrics Engineering Google Monitoring 158

Dynatrace

APRIL 21, 2022

If you still use the legacy version of Log Monitoring ( Log Monitoring v1 ), the Log Monitoring v1 documentation is still available, but we strongly encourage you to switch to the latest Dynatrace Log Monitoring version and gain direct access to the log content of all your mission-critical processes. General Availability (Build 1.239.178).

Azure 228

Azure Metrics AWS Monitoring 228