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

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

Smashing Magazine

AUGUST 10, 2023

Running A Page Speed Test: Monitoring vs. Measuring Running A Page Speed Test: Monitoring vs. Measuring Geoff Graham 2023-08-10T08:00:00+00:00 2023-08-10T12:35:05+00:00 This article is sponsored by DebugBear There is no shortage of ways to measure the speed of a webpage. Lighthouse results. And kept doing that over time.

Speed 81

Speed Monitoring Testing Network 81

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 279

Traffic Metrics Systems Strategy 279

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

Percona

OCTOBER 13, 2023

Let’s test it with InnoDB using the ibd2sdi tool. root@db3-node test]# ibd2sdi transaction_processing_flag.ibd -d transaction_processing_flag.sdi [root@db3-node test]# ls -lrth | grep transaction_processing_flag -rw-r --. 1 mysql mysql 0 Sep 18 08:15 test_table.MYD [root@db3-node test]# RocksDb also supports SDI.

Storage 94

Storage Database Engineering Open Source 94

Percona

JULY 25, 2023

The data is internally inconsistent because the server concurrently modifies the data files while they are being copied. The changes done by an uncommitted transaction can be flushed or written to the redo log by the server. So, given a table_id, how do you get the table schema/definition? ibd in the test directory.

Cache 86

Cache Benchmarking Servers Design 86

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 189

Lambda Media Open Source Metrics 189

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

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 197

Metrics Mobile Testing Strategy 197

Percona

SEPTEMBER 6, 2023

Definitions The examples below use MySQL, but it is helpful to check their competition’s documentation to help explain what a functional index is. MySQL’s definition is a little more convoluted, stating that in MySQL versions 8.0.13 Well, there is always a drawback to having the server do something complicated for you.

Speed 82

Speed Virtualization Storage Open Source 82

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 102

Cache Hardware Servers Benchmarking 102

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

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 107

Open Source Servers Engineering Scalability 107

Percona

MARCH 23, 2023

When it comes to enterprise-level databases, there are several options available in the market, but PostgreSQL stands out as one of the most popular and reliable choices. PostgreSQL supports sharding, which allows data to be distributed across multiple servers, making it ideal for high-traffic websites and applications.

Database 116

Database Open Source Traffic Small Business 116

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 Storage Database Systems 185

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 207

DevOps AWS Tuning Infrastructure 207

Testsigma

APRIL 23, 2021

With the increased usage of smartphones in recent years, enterprises and the software industry now have to cater their applications to mobile devices for web testing in addition to desktops. and are deployed using a web server. Now, the developer has developed a new complex feature and tests the application again.

Mobile 52

Mobile Testing Testing Tools Programming 52

Percona

AUGUST 30, 2023

In this blog, I am trying to list the options available for users and list them in increasing order of priority. The most common parameter used by the PostgreSQL server (postmaster) will be PGDATA, which sets the parameter data_directory. But changing this is possible only at the server startup. 20150623 (Red Hat 4.8.5-44),

Database 102

Database Servers Open Source Tuning 102

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 224

Azure Metrics AWS Monitoring 224

Percona

AUGUST 30, 2023

Hot backups vs. cold backups: A hot backup — used to minimize downtime and ensure data availability for critical applications — allows you to create a copy of a database while the system is still actively serving user requests and processing transactions. Whatever plan you arrive at, you must test it.

Database 88

Database Hardware Open Source Strategy 88

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

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 198

Engineering Performance Metrics Best Practices 198

Percona

AUGUST 3, 2023

The definition looks strange, but everything should be more clear, providing a real use case for this feature. You need to use the INVISIBLE keyword in the column definition. The simple idea is that you can make an index invisible to the optimizer in order to test the performance of a query if that index did not exist.

Best Practices 78

Best Practices Open Source Code Engineering 78

Percona

MARCH 20, 2023

In short, each cluster is, in reality, a single database with high availability and other functionalities built in. micro) The tests We will have very simple test cases. The second test will define how well the increasing load is served inside the previously identified range. Anyhow, we are here to talk about Proxies.

Games 121

Games Latency Traffic Cache 121

Testsigma

FEBRUARY 3, 2021

Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? To answer all these questions we need exhaustive mobile testing in place. Let us have a look at the most popular types of mobile testing for applications and hardware. Functional Testing. Usability Testing.

Mobile 82

Mobile Testing Hardware C++ 82

Percona

MAY 15, 2023

Normally this solution requires a full code redesign and could be quite difficult to achieve when it is injected after the initial code architecture definition. In shard-nothing, each shard can live in a totally separate logical schema instance / physical database server/data center/continent. The POC Why this POC?

Traffic 124

Traffic Scalability Database Servers 124

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 Server According to Bob

FEBRUARY 9, 2020

SQL Server BDC Hints and Tips: Contained AGs, Ports, containedag_msdb, ​​ logs, ​​ … This blog ​​ post ​​ focuses on connecting to the SQL Server BDC, ​​ some ​​ helpful ​​ log files ​​ and utility outputs.

Servers 40

Servers Database Availability Azure 40

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 Database Servers Availability 117

CSS Wizardry

MAY 19, 2020

Their ability to serve the tiniest possible font files tailored to specific user agents and platforms is amazing, and with such a huge, freely-available library served from Google-grade CDNs… I definitely see why people continue to turn to it. I ran the same suite of tests against the harry.is and csswizardry.com homepages.

Google 364

Google Media Latency Metrics 364

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

Percona

OCTOBER 17, 2023

The dynamic allocation might have flaws, but it’s definitely a good addition. available only for Atlas users) , that can not be modified anymore; That change was then introduced to 7.0. Let’s assume you are catching up with the releases and want to be at the latest release available, and then you upgraded from 4.4.x

Metrics 101

Metrics C++ Storage Database 101

CSS - Tricks

DECEMBER 23, 2020

Clicking the “Generate report” button will run a series of tests on the web page and display the results right there in the Lighthouse tab. This makes it easy to test any web page, whether public or requiring authentication. There are eight commands available at the time of writing.

Performance 78

Performance Storage Servers Virtualization 78

KeyCDN

SEPTEMBER 3, 2020

Our solution doesn't require any change on the origin server. How to measure performance The Website Speed Test is the ideal tool for measuring the performance of your website. Properly size images: Scaled images will definitely reduce the overall website size. The available operations are listed in our documentation.

Processing 127

Processing Cache Website Servers 127

Percona

DECEMBER 14, 2022

I was pretty optimistic that I’d truly have impressive numbers to share but as it turns out, while there is a potential for significant advantage, a detailed testing regime of the CITUS columnar store extension should be carried out before implementing them into your own environment. and which are available for download from github HERE.

Database 92

Database Analytics Storage Processing 92

High Scalability

FEBRUARY 1, 2022

SysOps Enginee r: As Kinsta ’s SysOps Engineer, you’ll play a key role in caring for the health of our servers, preventing issues, and responding immediately to mitigate any problems in our infrastructure. Learn how engineering teams are using products like StackHawk and Snyk to add security bug testing to their CI pipelines.

Education 100

Education DevOps Infrastructure Scalability 100