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

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 89

Programming Processing Code Artificial Intelligence 89

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

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

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++ 81

C++ Open Source Database Programming 81

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

The Agile Manager

MARCH 31, 2024

As a learning exercise, it is fantastic. I keep a record of what I do on individual stones, on how I configure machines and the maintenance I perform on them, and for the totality of activities I do in the workshop each day. Indirect tax?

FinTech 40

FinTech Education Testing Website 40

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 104

Engineering Innovation Systems Architecture 104

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 102

Programming Energy Code Processing 102

Tim Kadlec

FEBRUARY 21, 2018

For example, I have a folder full of 1-2 hour sections on various performance topics—the network, how the browser works, fonts, images, service-workers, etc. Exercises are critical. Some people may opt to sit out an exercise or two. The modules are rarely the same from different workshop to workshop.

Network 53

Network Code Performance 53

Brendan Gregg

DECEMBER 21, 2019

For my AWS re:Invent talk on BPF Performance Analysis at Netflix, I began with a demo of "BPF superpowers" (aka eBPF). 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. My [BPF Performance Tools] book has plenty of examples.

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

For my AWS re:Invent talk on BPF Performance Analysis at Netflix, I began with a demo of "BPF superpowers" (aka eBPF). 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. My [BPF Performance Tools] book has plenty of examples.

C++ 52

C++ Education Java AWS 52

The Agile Manager

AUGUST 31, 2021

Each person is responsible for the outcome because team performance is measured on collective output (specifically, stories in production) as opposed to the sum of individual output (tasks completed by individuals). One person who does a substandard job affects the performance of the entire team.

Metrics 52

Metrics Design Engineering C++ 52

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 142

Website Design Best Practices Code 142

SQL Performance

JULY 1, 2021

t2 ( id bigint IDENTITY PRIMARY KEY , msg ntext ) ; Now, let's try to perform online operations on the tables: ALTER TABLE dbo. An online operation cannot be performed for index 'PK__t2__3213E83FEEA1E0AD' because the index contains column 'msg' of data type text, ntext, image or FILESTREAM. CREATE TABLE dbo. ALTER TABLE dbo.

C++ 58

C++ Database Servers Performance 58

Tasktop

OCTOBER 23, 2020

We believe that diverse teams perform better and foster an environment of belonging and inclusion. The code base has an open review process that every engineer can learn from with each change. We enjoy social hours such as team lunches, team exercises and happy hours. Would exercise and health be a good topic?

Tuning 52

Tuning Engineering Programming Infrastructure 52

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. Example 1(a)’s min <= max is at this other end of the scale: It’s so dirt cheap to check that it’s unlikely we’ll ever have a performance reason to disable it. [2] 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. 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 107

Design Development Programming Website 107

MachMetrics

DECEMBER 12, 2019

The Implications of the ‘Badge of Shame’ At face value, this visual marker would provide a very clear and urgent incentive for developers to build their site in a performant, optimized way using today’s best practices. Most stemmed from Google exercising too much power with this move. Wrapping up and looking forward.

Google 86

Google Website Best Practices Internet 86

MachMetrics

JANUARY 4, 2019

The way a website is constructed can have a major impact on website speed performance, but developers often have a hard time keeping track of factors that cause slow page loads and other speed-related issues. Let’s explore how it works and what it can do to help get your performance up to speed on the backend and frontend.

Speed 60

Speed Website Open Source Google 60

SQL Performance

JANUARY 11, 2021

I've used sp_prepare less in my career than plan guides, and I wouldn't recommend using it for application code. (As In my case, I don't want to use it for performance reasons, I want to use it (along with sp_execute ) to simulate the prepared statement coming from the app.

Cache 59

Cache Tuning Database Performance 59

Sutter's Mill

JUNE 3, 2021

Briefly, what is the difference among: (a) undefined behavior Undefined behavior is what happens when your program tries to do something whose meaning is not defined at all in the C++ standard language or library (illegal code and/or data). You’ll get some valid result, but you won’t know what the result is until your code looks at it.

C++ 54

C++ Programming Lambda Code 54

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

The Agile Manager

JANUARY 31, 2017

It wasn't until the 1950s (well, more accurately, the rise of COBOL in the 1960s) that we really started capturing business workflows in code. Then something happened that went largely un-noticed: those business people who had devised and performed the manual processes that defined the software solutions built in the '70s and '80s retired.

Retail 45

Retail Energy Logistics Efficiency 45

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

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

SQL Performance

JUNE 10, 2020

That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? The answer is simple, to shorten the code by having the inner query use the infamous SELECT *. That’s safe and will get handled optimally in terms of index matching.

C++ 109

C++ Database Servers Code 109

Dynatrace

MAY 6, 2019

For this blog post I want to focus on how you can leverage Dynatrace to get a lot of insight into your plugin code. While working on the integration with Juniper I managed to resolve several bugs and achieve a major performance improvement. Part 1 – The code as it stood. Part 2 – Instrumenting the code.

Code 116

Code Development Metrics Network 116

ScaleOut Software

AUGUST 20, 2020

This allows application code to introspect on the dynamic behavior of each data source, maintain synthetic metrics which aid the analysis, and create alerts when conditions require. This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment.

Cloud 52

Cloud Development Analytics Azure 52

ScaleOut Software

AUGUST 20, 2020

This allows application code to introspect on the dynamic behavior of each data source, maintain synthetic metrics which aid the analysis, and create alerts when conditions require. This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment.

Cloud 52

Cloud Development Analytics Azure 52

The Agile Manager

AUGUST 31, 2020

Decades of poor architecture guidelines and lax developer discipline resulted in the commercial-off-the-shelf components of an ERP becoming inseparable from the custom code built around it. The exercise of assessing, modeling and dispositioning the landscape does offer valuable new ways of looking at legacy assets.

Architecture 52

Architecture Code Strategy Programming 52

SQL Performance

JUNE 10, 2020

That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? The answer is simple, to shorten the code by having the inner query use the infamous SELECT *. That’s safe and will get handled optimally in terms of index matching.

C++ 93

C++ Database Servers Code 93

Dynatrace

DECEMBER 10, 2020

I recently joined two industry veterans and Dynatrace partners, Syed Husain of Orasi and Paul Bruce of Neotys as panelists to discuss how performance engineering and test strategies have evolved as it pertains to customer experience. What do you see as the biggest challenge for performance and reliability? Dynatrace news.

Strategy 179

Strategy Performance Logistics Monitoring 179

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 178

Latency Website Traffic Virtualization 178

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 Latency Website Virtualization 173

The Agile Manager

SEPTEMBER 30, 2012

It's easy to assume that we're hiring competent developers who write high quality code, and most buyers don't know what to look for or how to look for technical quality. We can invest in people to become mobile solution developers who can write client and server code. Stronger hand-offs will slow down coding.

Mobile 49

Mobile Code Java Software 49

Speed Curve

DECEMBER 10, 2017

A brief history of performance metrics. In the case of performance metrics, we're trying to capture the behavior of a website in terms of speed and construction. While construction metrics are fairly well established, time-based performance metrics are newer and still evolving. Gaps in today's performance metrics.

Metrics 69

Metrics Website Speed Monitoring 69