The Netflix TechBlog

DECEMBER 3, 2019

A key observation was that most of our data scientists had nothing against writing Python code. Data scientists want to retain their freedom to use arbitrary, idiomatic Python code to express their business logic?—?like The steps can be arbitrary Python code. like they would do in a Jupyter notebook.

Open Source 238

Open Source AWS Infrastructure Energy 238

Dynatrace

JUNE 1, 2023

Service level objectives (SLOs) provide a powerful framework for measuring and maintaining software performance, reliability, and user satisfaction. 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. or 99.99% of the time.

Latency 245

Latency Website Traffic DevOps 245

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.

Government 278

Government DevOps Infrastructure Network 278

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 241

Latency Cache Java Traffic 241

Dynatrace

APRIL 21, 2022

Analyzing user experience to ensure uniform performance after migration. Performance efficiency. Some principles Microsoft provides across this area include: Choosing the right resources aligned with business goals that can handle the workload’s performance. Understanding resource utilization for cost management.

Azure 246

Azure Monitoring Virtualization Metrics 246

The Netflix TechBlog

DECEMBER 23, 2020

Titus is a multi-tenant system, allowing multiple teams and users to run workloads on the system, and ensuring they can all co-exist while still providing guarantees about security and performance. Various pieces of software used elevated capabilities for FUSE, low-level packet monitoring, and performance tracing amongst other use cases.

Media 295

Media Metrics Systems Processing 295

DZone

SEPTEMBER 11, 2019

This time we’ll take a look at how to write better tests in the form of harness programs (also known as fuzz drivers, programs are written to exercise specific parts of the code) that we will use for fuzz testing. If we want to improve our confidence, we can add steps to exercise more of the code.

Programming 113

Programming Testing Code Performance 113

Dynatrace

APRIL 5, 2024

For a more proactive approach and to gain further visibility, other SLOs focusing on performance can be implemented. In other words, where the application code resides. However, it’s essential to exercise caution: Limit the quantity of SLOs while ensuring they are well-defined and aligned with business and functional objectives.

Efficiency 264

Efficiency Traffic Tuning Metrics 264

Dynatrace

JUNE 1, 2023

Service level objectives (SLOs) provide a powerful framework for measuring and maintaining software performance, reliability, and user satisfaction. Teams can build on these SLO examples to improve application performance and reliability. This SLO enables a smooth and uninterrupted exercise-tracking experience.

Traffic 173

Traffic Website Latency DevOps 173

Dynatrace

SEPTEMBER 20, 2019

The new version of the application is deployed in the green environment and tested for functionality and performance. Let’s assume your team has just pushed new code and it passed pre-deployment testing. Both use the same database back-end and app configuration. Green then becomes the new production. Dynatrace Davis in action.

Systems 38

Systems Traffic DevOps Database 38

Sutter's Mill

MARCH 30, 2025

Were addressing UB methodically, starting with addressing the common high-value cases that will do the most to harden our code: uninitialized variables, out-of-bounds access, pointer misuse, and the key UB cases that adversaries need to implement remote code execution. Spoiler: All constexpr / consteval compile-time code is UB-free.

C++ 64

C++ Programming Code Google 64

The Netflix TechBlog

DECEMBER 3, 2019

A key observation was that most of our data scientists had nothing against writing Python code. Data scientists want to retain their freedom to use arbitrary, idiomatic Python code to express their business logic?—?like The steps can be arbitrary Python code. like they would do in a Jupyter notebook.

Open Source 135

Open Source AWS Infrastructure Energy 135

The Netflix TechBlog

SEPTEMBER 10, 2024

Finally, the device receives the message, and the action, such as “Show me Stranger Things on Netflix”, is performed. Where aws ends and the internet begins is an exercise left to the reader. Dynomite had great performance, but it required manual scaling as the system grew. Sample system diagram for an Alexa voice command.

Latency 234

Latency Cache Tuning Efficiency 234

The Netflix TechBlog

FEBRUARY 10, 2021

We wanted a way to ensure that we can have a consistent user experience while also sharing as much code as possible. This greatly reduces the number of bugs and improves the overall health and performance of every application that uses the design system. There will only be one implementation of buttons, tables, forms, etc.

Design 236

Design Systems Engineering Entertainment 236

Speed Curve

DECEMBER 13, 2023

So I thought it would be fun to spend some time poking around behind the scenes and give the site a holiday performance audit. Background For this performance audit, I looked at this synthetic test for the LEGO.com home page. (We The performance team is clearly doing a good job of fighting page bloat. Are images optimized?

Performance 78

Performance Retail Benchmarking Ecommerce 78

O'Reilly

JANUARY 17, 2023

Figuring out what kinds of problems are amenable to automation through code. So it behooves a software developer to spot what portions of human activity can be properly automated away through code, and then build that. Because if companies use code to automate business rules, they use ML/AI to automate decisions.

Tuning 145

Tuning Open Source Software Software 145

O'Reilly

MARCH 18, 2025

Managing the new risks required everyone to exercise new discipline. One person forcing a hasty code change could upset operations and lead to sizable losses. But before that, AIAWs must perform prep work around strategy: What is AI, really? Their code may pass the Python interpreter, but it’s all Java constructs.

Best Practices 52

Best Practices Java Software Software 52

Dynatrace

JUNE 1, 2021

Application performance monitoring (APM) is the practice of tracking key software application performance metrics using monitoring software and telemetry data. Practitioners use APM to ensure system availability, optimize service performance and response times, and improve user experiences. Application performance management.

Monitoring 165

Monitoring Mobile Social Media Infrastructure 165

O'Reilly

MARCH 11, 2025

On May 8, OReilly Media will be hosting Coding with AI: The End of Software Development as We Know It a live virtual tech conference spotlighting how AI is already supercharging developers, boosting productivity, and providing real value to their organizations. Much of the code ChatGPT was trained on implemented those dark patterns.

Artificial Intelligence 52

Artificial Intelligence Hardware Website Media 52

Sutter's Mill

JULY 29, 2024

Safety and simplicity are the two core things I want to try to dramatically improve in C++, and are why I’m doing my cppfront experiment, so although the above absorbed some time away from cppfront coding it all contributes to the same goal. (If Jul 10, 2024), new things include: Added. Allow trailing commas in lists.

C++ 116

C++ Lambda Code Open Source 116

SQL Performance

JANUARY 12, 2022

This month, I'm going to start exploring the submitted solutions, roughly, going from the worse performing to the best performing ones. Why even bother with the bad performing ones? This article is dedicated to this poor performing approach. Despite the poor performance, working on the solution is an interesting exercise.

Code 116

Code Servers Performance Azure 116

SQL Performance

APRIL 14, 2021

It has excellent performance, and there’s quite a lot that you can learn from it. Evaluating earlier solutions, one of the important factors in getting good performance was the ability to employ batch processing. Here are the performance numbers that I got in my test: CPU time = 10032 ms, elapsed time = 10025 ms.

Servers 112

Servers C++ Testing Code 112

Smashing Magazine

AUGUST 19, 2021

It all starts with a Code of Ethics. “I Outcomes of a code of ethics affect almost every aspect of your user research practice, from processes to templates and team environment. Outcomes of a code of ethics affect almost every aspect of your user research practice, from processes to templates and team environment.

Code 143

Code Design Education Government 143

O'Reilly

OCTOBER 24, 2023

We already see hints of that on GitHub: in February 2023, GitHub said that 46% of all the code checked in was written by Copilot. At some point in the near future, new models will be trained on code that they have written. I expected it to stay close to 1, and the experiment would serve no purpose other than exercising my laptop’s fan.

Programming 120

Programming Code Processing Engineering 120

Smashing Magazine

OCTOBER 16, 2021

After working on a coding project for a good couple of hours, many developers like myself tend to hit a wall. For the most part, coding can be quite intimidating and disappointing for a beginner or even a well-versed developer. Physical Exercise. A Simple But Effective Mental Health Routine For Programmers. Dave Oscar.

Programming 120

Programming Energy Code Processing 120

The Netflix TechBlog

MAY 27, 2020

From failure injection testing to regularly exercising our region evacuation abilities, Netflix engineers invest a lot in ensuring the services that comprise Netflix are robust and reliable. CORE is a team consisting of Site Reliability Engineers, Applied Resilience Engineers, and Performance Engineers.

Engineering 105

Engineering Innovation Systems Architecture 105

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

Smashing Magazine

JULY 27, 2021

is opinionated about how to organize JavaScript code, but it doesn’t have built-in opinions about how to organize CSS. and exercise best CSS practices. CSS-in-JS can also have a performance impact by causing additional renders and dependencies on the global state. Another advantage to CSS modules is performance.

Website 144

Website Design Best Practices Code 144

O'Reilly

OCTOBER 19, 2021

If you peek under the hood of an ML-powered application, these days you will often find a repository of Python code. Let’s start by considering the job of a non-ML software engineer: writing traditional software deals with well-defined, narrowly-scoped inputs, which the engineer can exhaustively and cleanly model in the code.

DevOps 145

DevOps Software Engineering Infrastructure Open Source 145

O'Reilly

JUNE 15, 2023

Governance is not a “once and done” exercise. In his book Voices in the Code , James G. .” Profit should be an instrumental goal, not a goal in and of itself. And as to our actual goals, Satya put it well in our conversation: “the moral philosophy that guides us is everything.”

Government 130

Government Best Practices Energy Internet 130

HammerDB

APRIL 19, 2023

Predicting application performance is a difficult art, but an important one when choosing the target deployment environment. In this blog, we aim to call out some key considerations when trying to assess MySQL performance for your application. We will not concern ourselves with the raw throughput of workload.

Performance 55

Performance Benchmarking Cache Storage 55

Percona

DECEMBER 29, 2022

While working as a DBA, we perform many regular tasks, and one of them is upgrading our database systems. There are some techniques to perform a PostgreSQL database upgrade, such as data dump and import, logical replication, or in-site upgrade using pg_upgrade. If all is good, perform the upgrade removing the –check flag.

C++ 84

C++ Open Source Database Programming 84

Percona

AUGUST 8, 2023

Or worse yet, sometimes I get questions about regaining normal operations after a traffic increase caused performance destabilization. Unfortunately, this topic is more of an art than a science, given that there is really no foolproof algorithm or approach that can tell you exactly where you might hit a bottleneck with server performance.

Traffic 98

Traffic Cache Monitoring Database 98

SQL Performance

OCTOBER 9, 2019

Consequently, handling our task becomes a no-brainer: DECLARE @s AS VARCHAR ( 20 ) = '123.456.789,00' ; SELECT TRANSLATE ( @s , '.,' , ',' ) ; This code generates the desired output: 123,456,789.00. As an exercise, try solving this task with a pre-SQL Server 2017 compatible solution where you cannot use TRIM and TRANSLATE.

C++ 111

C++ Database Servers Code 111

Smashing Magazine

DECEMBER 2, 2021

Advent of Code. If you prefer a puzzle over an article, take a look at Advent of Code. Good ol’ PerfPlanet is back for another season with all things speed and web performance. Code Security Advent Calendar. JavaAdvent on Twitter. Stoyan Stefanov on Twitter. Perfplanet calendar’s oldies but goodies. LeanUXmas on Twitter.

Design 120

Design Development Programming Website 120

Percona

AUGUST 30, 2023

If a PostgreSQL user wants to change these values, they need to recompile the PostgreSQL from the source code. This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. If, at all, there is any crash in between, I am OK to perform the ETL again. Type "help" for help.

Database 120

Database Servers Open Source Tuning 120

Rigor

NOVEMBER 22, 2019

Reading time 9 min When it comes to managing web performance, it’s vital to be proactive rather than reactive. To accomplish this goal, an organization needs to build internal processes and procedures that can operationalize a performance-first culture. The first step is to establish and implement web performance budgets.

Performance 45

Performance Metrics Website Speed 45