The Netflix TechBlog

SEPTEMBER 8, 2020

On the Android team, while most of our time is spent working on the app, we are also responsible for maintaining this backend that our app communicates with, and its orchestration code. Image taken from a previously published blog post As you can see, our code was just a part (#2 in the diagram) of this monolithic service.

Latency 233

Latency Cache Java Traffic 233

Smashing Magazine

OCTOBER 13, 2021

You can always ask a question live , you can share your screen and get immediate feedback, and you can work on group exercises with people around the world. Live discussions and interactive exercises are at the very heart of every workshop, with group work, homework, reviews and live interaction with people around the world.

Design 86

Design Programming Testing Systems 86

Percona

OCTOBER 31, 2023

The process of gathering data will take some time, but we plan to periodically share statistics that we collect, like breakdowns of versions of database software being used or popular operating systems and architectures. Check our code You can check the telemetry module’s code in our GitHub repository: [link] Do you have feedback?

Open Source 89

Open Source Database Operating System Programming 89

Percona

DECEMBER 29, 2022

While working as a DBA, we perform many regular tasks, and one of them is upgrading our database systems. In this blog post, I will show you a particular example I faced when working with an upgrade exercise using pg_upgrade. When working with the upgrade exercise, the goal was to move from PostgreSQL 11 to PostgreSQL 12.

C++ 82

C++ Open Source Database Programming 82

The Netflix TechBlog

MAY 27, 2020

Reliability, formally speaking, is the ability of a system to function under stated conditions for a period of time. Put simply, reliability means a system should work and continue working. assisting the responding service owners with understanding what systems are contributing to the incident Liaison?—?communicating

Engineering 104

Engineering Innovation Systems Architecture 104

Particular Software

MARCH 28, 2022

You can create a class that is a lousy saga but is still perfectly valid C# code. With Roslyn analyzers and code fixes , we can now do a lot better and help guide you toward the pit of success. This will save you time, as you won’t have to run your code to find out that you can’t use DateTime as a correlation property type.

Development 52

Development C++ Virtualization Metrics 52

O'Reilly

JUNE 27, 2023

When a person clicked “submit,” the website would pass that form data through some backend code to process it—thereby sending an e-mail, creating an order, or storing a record in a database. That code was too trusting, though. Red-team exercises can uncover weaknesses in the system while it’s still under development.

Social Media 89

Social Media Media Website Database 89

J. Paul Reed

AUGUST 7, 2023

(It’s worth noting: the right end of the spectrum also covers the more… “exotic” action items, like “This was caused by a Windows-issue, so let’s migrate our entire self-run physical infrastructure to Linux and rewrite the entire code base.” In practice (and I’ve done this exercise with teams), this spectrum can provide useful insight.

Engineering 52

Engineering Hardware Games Infrastructure 52

Dynatrace

SEPTEMBER 20, 2019

Let’s assume your team has just pushed new code and it passed pre-deployment testing. But wait, there is more: Davis doesn’t just tell what exactly happened; it also understands how everything is connected—the relationships and interdependencies between each layer, component, and bit of code in your application environment.

Systems 26

Systems Traffic DevOps Database 26

HammerDB

APRIL 19, 2023

Instead, focus on understanding what the workloads exercise to help us determine how to best use them to aid our performance assessment. Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. Operating System: Ubuntu 22.04 Operating System: Ubuntu 22.04

Performance 54

Performance Benchmarking Cache Storage 54

The Agile Manager

OCTOBER 31, 2020

It had licensed a workflow technology and contracted a large number of people to code and configure a custom solution around it. The rules were implemented as IFTTT statements in a low-code language that did not allow them to be tested in isolation. When that happens, the exercise tends to yield no better than "less bad."

Programming 59

Programming Testing Code Technology 59

Brendan Gregg

DECEMBER 21, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python usr/bin/python # # iwlstrength.py iwl wifi stregth as audio # For Linux, uses BCC, eBPF.

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python usr/bin/python # # iwlstrength.py iwl wifi stregth as audio # For Linux, uses BCC, eBPF.

C++ 52

C++ Education Java AWS 52

The Agile Manager

AUGUST 31, 2021

If we accept the fact that Agile is a value system and not a set of mechanical processes, it stands to reason that there must be something different about the norms and behaviors of Agile managers vis-a-vis traditional managers. They all had characteristics that are applicable to all management roles.

Metrics 52

Metrics Design Engineering C++ 52

Testsigma

MARCH 6, 2020

Regression testing comprises re-running the test cases of already stable features and finding out if the new code changes attributed to the new release led to any negative impacts on the existing functionalities. Regression checks should start as soon as a new build is released for testing and should be repeated for every new code build.

Best Practices 52

Best Practices Testing Code Testing Tools 52

Sutter's Mill

JANUARY 11, 2021

Assertions have been a foundational tool for writing understandable computer code since we could write computer code… far older than C’s assert() macro, they go back to at least John von Neumann and Herman Goldstine (1947) and Alan Turing (1949). Run-time errors should be reported using exceptions, error codes, or similar.

C++ 58

C++ Programming Code Testing 58

Sutter's Mill

JANUARY 25, 2021

We want a way to enable checking for some assertions but not others in the same code, because we may not always be able to afford expensive checks. If you develop your own assertion system for in-house use, support enabling/disabling at least these kinds of assertions independently. [1] in production).

C++ 45

C++ Programming Cache Testing 45

Smashing Magazine

DECEMBER 2, 2021

Advent of Code. If you prefer a puzzle over an article, take a look at Advent of Code. Code Security Advent Calendar. If you’re up for a challenge that involves spotting security vulnerabilities, then the Code Security Advent Calendar is just the right one for you. JavaAdvent on Twitter. LeanUXmas on Twitter.

Design 107

Design Development Programming Website 107

The Agile Manager

AUGUST 31, 2020

I've worked with quite a few companies for which long-lived software assets remain critical to day-to-day operations, ranging from 20-year-old ERP systems to custom software products that first processed a transaction way back in the 1960s. The first and most obvious is that they are long on how to start, but short on how to finish.

Architecture 52

Architecture Code Strategy Programming 52

MachMetrics

DECEMBER 12, 2019

Google has announced plans for a new badging system that would let users know whether a website typically loads slowly. Most stemmed from Google exercising too much power with this move. By taking feedback from other users and developers, Google can implement a system that will grow in a positive manner.

Google 86

Google Website Best Practices Internet 86

Particular Software

DECEMBER 9, 2019

Decommissioning Public102 was an exercise in the mundane, gradually transitioning tiny service after tiny service to new homes over the course of weeks, as the development schedule allowed. From Udi Dahan's Advanced Distributed Systems Design Course , Day 1 Embrace change The only constant in the universe is change.

Wireless 52

Wireless DevOps Infrastructure Network 52

The Netflix TechBlog

FEBRUARY 10, 2021

Stranger Things imagery showcasing the inspiration for the Hawkins Design System by Hawkins team member Joshua Godi ; with art contributions by Wiki Chaves Hawkins may be the name of a fictional town in Indiana, most widely known as the backdrop for one of Netflix’s most popular TV series “Stranger Things,” but the name is so much more.

Design 230

Design Systems Engineering Entertainment 230

Particular Software

SEPTEMBER 11, 2023

Migrating a message-based system from on-premises to the cloud is a colossal undertaking. If you search for “how to migrate to the cloud”, there are reams of articles that encourage you to understand your system, evaluate cloud providers, choose the right messaging service, and manage security and compliance.

Cloud 126

Cloud Systems Azure Airlines 126

Dynatrace

JUNE 1, 2023

More than half of CIOs confirmed that they often make tradeoffs among code quality, security, and reliability to meet the need for rapid software delivery. It represents the percentage of time a system or service is expected to be accessible and functioning correctly. But the pressure on CIOs to innovate faster comes at a cost.

Latency 177

Latency Website Traffic Virtualization 177

Dynatrace

JUNE 1, 2023

More than half of CIOs confirmed that they often make tradeoffs among code quality, security, and reliability to meet the need for rapid software delivery. It represents the percentage of time a system or service is expected to be accessible and functioning correctly. But the pressure on CIOs to innovate faster comes at a cost.

Traffic 173

Traffic Latency Website Virtualization 173

Sutter's Mill

MARCH 25, 2021

Some of these are exercised by the “wrong order” permutations above, but even call sites that remember the right argument order can make mistakes about the actual values. But if the sight of these function signatures has had you pulling your hair and shouting “use the type system, Luke!” is_reachable? Language support.

C++ 45

C++ Design Code Systems 45

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific.

C++ 109

C++ Database Servers Code 109

The Agile Manager

DECEMBER 31, 2016

Core systems are a complex web of integrated rules and functions spun over generations. Employees will see replatforming as an exercise in re-creating software. The existing systems have their shortcomings, but we run a multi-billion dollar business on that code, so we must be pretty good at software. Destiny awaits.

Innovation 40

Innovation Infrastructure Engineering Software 40

SQL Server According to Bob

FEBRUARY 10, 2019

Several event types are included in the health session, some of which include predicates to remove noise from the system health session. The events logged in the system health show a non-yield beginning, then a login timeout occurring and the non-yield ending. I started with a cmd file script exercising the connection path.

Servers 40

Servers Network Database Systems 40

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific.

C++ 93

C++ Database Servers Code 93

The Agile Manager

FEBRUARY 28, 2017

Tool 1: Dolly the Sheep Companies that are heavily rule-based - think insurance - eagerly moved their business rules into code. It was easy to move into code; it's just as easy to move it back into human-readable format. There are people behind the systems to which we're bound today. Why not put them back on the payroll?

Strategy 40

Strategy Java Code Systems 40

The Agile Manager

NOVEMBER 30, 2014

Glossy proclamations of new strategic visions often boil down to a prosaic cost-cutting exercise, or into a failure of implementation." Obviously, we don't want to pay to maintain multiple e-Commerce sites or pay licensing fees for multiple ERP systems. We need to combine systems, and do so quickly.

Airlines 40

Airlines Efficiency Systems Processing 40

Dynatrace

MAY 15, 2020

How to assess an environment’s security posture, risk and threat profile, and possible attack vectors, where perhaps you didn’t code the application or build the infrastructure, and where new code is deployed frequently, and the infrastructure is constantly changing? And this poses a significant risk. Showing a list of key processes.

Government 225

Government DevOps Infrastructure Network 225

The Netflix TechBlog

DECEMBER 23, 2020

By Fabio Kung , Sargun Dhillon , Andrew Spyker , Kyle , Rob Gulewich, Nabil Schear , Andrew Leung , Daniel Muino, and Manas Alekar As previously discussed on the Netflix Tech Blog, Titus is the Netflix container orchestration system. It runs a wide variety of workloads from various parts of the company?—?everything

Media 286

Media Metrics Systems Processing 286

Testlodge

AUGUST 9, 2023

The tester established a baseline by selecting the most critical, common, or obvious path through the code selection. Steps to Performing Basis Path Testing The first step is to create a control flow graph for a specified code section. The second step is to select a baseline path through the code.

Testing 75

Testing Software Software C++ 75

SQL Server According to Bob

JANUARY 26, 2017

My goal is to resolve mysteries about SQL Server I encounter but do this without going straight the source code first. And we state in the documentation the following regarding tempdb: Transparent Data Encryption and the tempdb System Database. For more information about the tempdb system database, see tempdb Database.

Servers 40

Servers Database Azure Cache 40

Nick Desaulniers

APRIL 18, 2014

“It’s written in ones and zeroes - binary code. A really advanced hacker comes to understand the true inner workings of the machine – he sees through the language he’s working in and glimpses the secret functioning of the binary code – becomes a Ba’al Shem of sorts.” For example in the code: 1.

C++ 98

C++ Programming Code Virtualization 98