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

JULY 15, 2024

As HTTP and browser monitors cover the application level of the ISO /OSI model , successful executions of synthetic tests indicate that availability and performance meet the expected thresholds of your entire technological stack. into NAM test definitions. Our script, available on GitHub , provides details.

Availability 242

Availability Network Monitoring Infrastructure 242

Percona

NOVEMBER 1, 2023

MySQL Server – Community Edition The problem applies to all versions of the upstream MySQL Community up to 8.0.23. Here is an example scenario you may end up here: mysql > select @@version,@@version_comment; + --+ + | @@version | @@version_comment | + --+ + | 5.7.43 | MySQL Community Server (GPL) | + --+ + 1 row in set (0.00

Servers 103

Servers Database Cache C++ 103

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

The core distribution is a bare-bones distribution of the Collector for OpenTelemetry developers to develop and test. The following is a sample Instrumentation resource definition for a Python service: apiVersion: opentelemetry.io/v1alpha1 inject-python: "true" spec: containers: - name: py-otel-server image: otel-python-lab:0.1.0-py-otel-server

Java 183

Java Servers Code Metrics 183

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. Fixed an issue with “500 Internal Server Error” response of Anomaly detection – Disk events API. (APM-370270). Dashboards. Dynatrace API.

Tuning 205

Tuning Metrics Cloud Mobile 205

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

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

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

The Netflix TechBlog

SEPTEMBER 18, 2024

message IdempotencyToken ( Timestamp generation_time, String token ) At Netflix, client-generated monotonic tokens are preferred due to their reliability, especially in environments where network delays could impact server-side token generation. Either or both may be required by backing storage engines to de-duplicate mutations.

Latency 254

Latency Storage Cache Efficiency 254

The Netflix TechBlog

MAY 19, 2023

Netflix application identities are fundamentally attribute based: e.g. an instance of the Data Processor runs in eu-west-1 in the test environment with a public shard. The community’s excitement and interest became apparent through comments, reactions, and conversations on the SpiceDB Discord server. with which to experiment.

Cache 257

Cache Google Open Source Systems 257

SQL Performance

AUGUST 2, 2019

I have been making the same recommendations about tempdb since I started working with SQL Server over 15 years ago, when I was working with customers running version 2000. From the customer side, this has been the limit of what can be done*, until SQL Server 2019. is out , I thought it might be time to do a bit of testing myself.

Servers 95

Servers C++ Testing Systems 95

Dynatrace

AUGUST 16, 2019

As microservices and automation continue to drive API usage, most organizations have either already introduced, or plan to introduce, an API testing process. With Dynatrace Synthetic you can easily create API tests with synthetic monitors. Now we’re making it easier for you to test APIs that are secured by OAuth 2.0!

Monitoring 158

Monitoring Tuning Google Testing 158

Dynatrace

MAY 28, 2020

Keptn uses SLO definitions to automatically configure Dynatrace or Prometheus alerting rules. After a new build gets deployed and automated tests executed, SLIs are evaluated against their SLOs and, depending on that result, a build is considered good (promoted) or bad (rolled back). “ This is what this blog is all about.

Engineering 200

Engineering Performance Metrics Best Practices 200

Alex Podelko

OCTOBER 18, 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. While agile development / DevOps become mainstream nowadays, their integration with performance testing is just making first steps. – Cloud.

Performance Testing 100

Performance Testing Testing Performance DevOps 100

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

CSS Wizardry

DECEMBER 9, 2023

Once you’ve run a test, you can head to a Connection View of the waterfall which shows a diagram comprising entries per origin, not per response: Note that some connections are actually shared across more than one domain: this is HTTP2’s connection coalescence , available when origins share the same IP address and certificates.

Speed 280

Speed Network Analytics Availability 280

Alex Podelko

OCTOBER 20, 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. Another major trend is using multiple third-party components and services, which may be not easy to properly incorporate into testing. – Cloud.

Performance Testing 100

Performance Testing Architecture Testing Performance 100

Highly Scalable

AUGUST 14, 2012

One of the challenges we faced was very slow automatic tests — full unit/integration test suite takes more than 2 hours for Hadoop core and more than 9 hours for Apache Pig. Although there are different ways to alleviate this problem (divide tests into suites, optimize tests by tweaking timeouts and sleeps, etc.),

Speed 100

Speed Testing Java Lambda 100

Testsigma

APRIL 4, 2022

A common theme among most software testing organizations is their escalating interest in Test Automation. While test automation has grown in popularity, there are still many myths and biases surrounding it. Such myths can unknowingly create a self-limiting boundary and negatively impact the possibilities of test automation.

Testing 95

Testing Open Source IoT Programming 95

SQL Performance

JULY 19, 2022

The simplest definition of a log record: it describes a single change to a database. You can read a bit more about rollbacks in my article A Complete Introduction to SQL Server Transactions on the SentryOne blog, and I’ll cover them in depth in the next article. What Are Log Records? Log Record Types.

Servers 94

Servers Database Storage Engineering 94

Testsigma

SEPTEMBER 23, 2021

Cross-browser testing is performed to be sure that your product is working as expected on the various device, platform, and browser (and their versions) combinations that your customers might be using. However, the pain and efforts associated can be reduced, if the cross-browser testing is cloud-based. Reference: [link].

Cloud 96

Cloud Testing Infrastructure Internet 96

SQL Performance

FEBRUARY 10, 2021

I’ll do my testing in tempdb, enabling IO and TIME statistics: SET NOCOUNT ON ; USE tempdb ; SET STATISTICS IO , TIME ON ; The fastest solution from last month applies a join with a dummy table that has a columnstore index to get batch processing. Fastest solution so far. Here’s the code to create the dummy table: DROP TABLE IF EXISTS dbo.

C++ 124

C++ Servers Testing Code 124

SQL Performance

APRIL 17, 2020

When we ask SQL Server to change some aspect of a column's definition, it needs to check that the existing data is compatible with the new definition. Rewrite some or all of the stored data to match the new definition. Improvements in SQL Server 2016. You get these undocumented improvements for free. ( SELECT.

Servers 63

Servers Database Testing Efficiency 63

KeyCDN

FEBRUARY 4, 2021

This query is performed by a Domain Name Server (DNS server) or servers nearby that have been assigned responsibility for that hostname. You can think of a DNS server as a phone book for the internet. A DNS server maintains a directory of domain names and translates them to IPs. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

Scalegrid

FEBRUARY 15, 2024

Each section is crafted to elevate your database’s security protocol, from acquiring the necessary SSL certificates to configuring server and client connections. Preparing SSL Certificates for MongoDB The SSL certificates are necessary for our MongoDB server to establish secure SSL/TLS communications.

Servers 130

Servers Best Practices Government Network 130

SQL Performance

APRIL 14, 2021

I’ll do my testing in tempdb, enabling I/O and time statistics: SET NOCOUNT ON ; USE tempdb ; SET STATISTICS TIME , IO ON ; Limitations of earlier ideas. Here’s the function’s definition: -- Helper dummy table. BatchMe ( col1 INT NOT NULL , INDEX idx_cs CLUSTERED COLUMNSTORE ) ; GO. -- Function definition. BatchMe ; GO.

C++ 112

C++ Servers Testing Code 112

Testsigma

JULY 23, 2020

Let’s briefly describe the basic definitions of each of them first and then describe in detail the underlying differences that make them fall apart in certifying the quality of each of them. By just updating the application on the remote server, all the users can have access to the updated application.

Testing 63

Testing Internet Internet Latency 63

Testsigma

JUNE 10, 2021

In this article, we will only discuss testing the OTP based authentication for obvious reasons. We cannot test third-party mobile apps like Twilio Authy or Google Authenticator. And then we will move on to learning how to test 2 Factor Authentication. How to test 2 Factor Authentication based systems. The Questions.

FinTech 140

FinTech Mobile Speed Testing 140

Percona

MARCH 27, 2023

On MySQL and Percona Server for MySQL , there is a schema called information_schema (I_S) which provides information about database tables, views, indexes, and more. The same tests have been executed in Percona Server for MySQL 5.7 Setup The setup consists of creating 10K tables with sysbench and adding 20 FKs to 20 tables.

Cache 109

Cache Hardware Servers Benchmarking 109

Dynatrace

APRIL 21, 2022

You can now enable a burn rate visualization during SLO creation either from the SLO wizard or from Service-level objective definitions by enabling Burn rate visualization enabled. High memory usage or potential OutOfMemory if the server is running without Elasticsearch connection for a prolonged time. (APM-362484). APM-363024).

Azure 228

Azure Metrics AWS Monitoring 228

All Things Distributed

DECEMBER 1, 2016

I was joined by 32,000 James Bonds at the conference today from all around the world, and we introduced new services focused on accelerating this transformation across development, testing and operations, data and analytics, and computation itself. Transformation in Development, Testing, & Operations.

AWS 139

AWS Development Lambda Open Source 139

Smashing Magazine

JULY 18, 2022

If you think that static rendering is limited to generic, public content that is the same for every user of your website, you should definitely read this article. Segmented Rendering is a new pattern for the Jamstack that lets you personalize content statically, without any sort of client-side rendering or per-request Server-Side Rendering.

Cache 118

Cache Website Servers Energy 118

Testsigma

MAY 14, 2021

Cloud-based testing has become quite integral these days. Most businesses have already done the shift towards cloud-based testing. The traditional testing that was done on the software installed on local servers is now slowly fading away. Cloud-based testing comprises cloud-based test automation as well.

Cloud 67

Cloud Testing Testing Tools Internet 67

Percona

APRIL 4, 2023

” While this is definitely a valid use case, I hadn’t personally come across an issue in the wild where the application fix wasn’t trivial. To quickly set up the environment, ProxySQL was installed locally on the host running pt-archiver and set up with a single backend (the target testbed server). OR (`id` = ?

Open Source 113

Open Source Servers Engineering Scalability 113

SQL Performance

JULY 14, 2021

When you create a view, SQL Server records metadata information in a number of catalog objects. It records some general information, which you can query via sys.views, the view definition which you can query via sys.sql_modules, column information which you can query via sys.columns, and more information is available through other objects.

Code 117

Code Servers Database Availability 117

Percona

SEPTEMBER 19, 2023

The effort has definitely paid off, as we can release shortly after upstream. To highlight some: Logical replication from standby servers is now supported natively by PostgreSQL. We’re hoping to share some good news in this regard and provide an MVP for all of you to try and test by the end of this year.

Availability 115

Availability Open Source Database Servers 115