The Netflix TechBlog

FEBRUARY 1, 2022

You study and practice coding interview problems for hours/days/weeks/months, only to be asked to merge two sorted lists. For many roles, you will be given a choice between a take-home coding exercise or a one-hour discussion with one of the engineers from the team. These questions reflect actual challenges that our teams face.

Engineering 199

Engineering Games Entertainment Innovation 199

Dynatrace

MAY 15, 2020

For Federal, State and Local agencies to take full advantage of the agility and responsiveness of a DevOps approach to the software lifecycle, Security must also play an integral role across lifecycle stages. Modern DevOps permits high velocity development cycles resulting in weekly, daily, or even hourly software releases.

Government 222

Government DevOps Infrastructure Network 222

Percona

OCTOBER 31, 2023

Percona has a mission to provide the best open source database software, support, and services so our users can innovate freely. Continuing this trajectory into the future improvements in the development of our software products will require many decisions. We are proud of how far we have come over the last 16+ years.

Open Source 91

Open Source Database Operating System Programming 91

Dynatrace

DECEMBER 10, 2020

During the recent pandemic, organizations that lack processes and systems to scale and adapt to remote workforces and increased online shopping are feeling the pressure even more. Company brands are now measured by the “app” and “app experience” and expect every application to be as fast as Google.

Strategy 175

Strategy Performance Logistics Monitoring 175

Dynatrace

APRIL 21, 2022

Using high-fidelity metrics, logs, code-level tracing, and a dynamic topology map of your applications, Davis can identify the precise root cause and prioritize its business impact. To optimize your back-end systems, you can use the service flow view within Dynatrace to identify layers of application architecture. Reliability.

Azure 184

Azure Monitoring Virtualization Metrics 184

The Morning Paper

APRIL 16, 2019

Teaching rigorous distributed systems with efficient model checking Michael et al., It describes the labs environment, DSLabs , developed at the University of Washington to accompany a course in distributed systems. Enabling students to build running performant versions of all of those systems in the time available is one challenge.

Systems 43

Systems Efficiency Testing Strategy 43

Percona

AUGUST 8, 2023

As such, one of the more common questions I get from my clients is whether or not their system will be able to endure an anticipated load increase. Does your traffic increase come with updated code changes that change the queries? When you saturate disk IOPS, your system is going to run slow. Do these queries use more caches?

Traffic 90

Traffic Cache Monitoring Database 90

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. Dynatrace news.

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

Tasktop

FEBRUARY 24, 2021

That’s a bit alarming, because the Flow Metrics of several Fortune 100 companies now practicing value stream management (VSM ) in their software portfolios have revealed an acute resource scarcity in QA. Get together once a year for a value stream mapping exercise, and you’ll emerge with a list of potential improvement hypotheses. .

Healthcare 52

Healthcare Retail Metrics Innovation 52

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

Particular Software

DECEMBER 9, 2019

You create a new server with the same software and add it to the load balancer. 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. It's easy enough to upgrade load-balanced web servers.

Wireless 52

Wireless DevOps Infrastructure Network 52

Tasktop

FEBRUARY 24, 2021

That’s a bit alarming, because the Flow Metrics of several Fortune 100 companies now practicing value stream management (VSM ) in their software portfolios have revealed an acute resource scarcity in QA. Get together once a year for a value stream mapping exercise, and you’ll emerge with a list of potential improvement hypotheses. .

Healthcare 40

Healthcare Retail Metrics Innovation 40

The Morning Paper

JANUARY 23, 2020

The process tracing exercise included: Examning IRC transcripts from multiple channels. Gathering timestapms of changes made to application code during the outage. A coded timelime was created dividing activities into three main types: Coordination activities. First look for any correlation to the last change made to the system.

Internet 53

Internet Internet Cache Engineering 53

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. Or perhaps more accurately, asset capture through strangulation.

Architecture 52

Architecture Code Strategy Programming 52

HammerDB

APRIL 19, 2023

Among the different components of modern software solutions, the database is one of the most critical. Instead, focus on understanding what the workloads exercise to help us determine how to best use them to aid our performance assessment. Operating System: Ubuntu 22.04 TB)) for storage of database tablespaces and logging.

Performance 54

Performance Benchmarking Cache Storage 54

Adrian Cockcroft

NOVEMBER 11, 2019

A resilient system continues to operate successfully in the presence of failures. There are many possible failure modes, and each exercises a different aspect of resilience. Hence, one way to reduce risk is to make systems more observable. This discussion focuses on hardware, software and operational failure modes.

Latency 52

Latency Engineering Systems Hardware 52

Dynatrace

SEPTEMBER 20, 2019

Blue/green deployment for releasing software faster, safer. Let’s assume your team has just pushed new code and it passed pre-deployment testing. The alert comes with the full context of the issue, including errors caused, impacted systems, and level of severity. Step 1 — The Dynatrace Davis AI-engine identifies the root cause.

Systems 26

Systems Traffic DevOps Database 26

Adrian Cockcroft

NOVEMBER 11, 2019

A resilient system continues to operate successfully in the presence of failures. There are many possible failure modes, and each exercises a different aspect of resilience. Hence, one way to reduce risk is to make systems more observable. This discussion focuses on hardware, software and operational failure modes.

Latency 53

Latency Engineering Systems Hardware 53

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 Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. PLOS’19.

Hardware 56

Hardware Programming Media Storage 56

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

Alex Russell

AUGUST 30, 2021

Does Apple restrict, in any way, the ability of competing web browsers to deploy their own web browsing engines when running on Apple's operating system? Anyone who cares to download and fork the code can do so. House Antitrust Subcommittee includes their most specific claims: 4. If no, please explain why not.

Engineering 98

Engineering Open Source Website Operating System 98

Alex Russell

SEPTEMBER 20, 2020

Pre-publication gates were valuable when better answers weren't available, but commentators should update their priors to account for hardware and software progress of the past 13 years. Circa '07, those web apps were notably slower than native code could be. New low-end devices are 4-to-8 core, 2GHz systems with 2GiB of RAM.

Hardware 64

Hardware Mobile Programming Java 64

John McCalpin

AUGUST 1, 2018

Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? Interacting components in the execution of an MPI job — a brief outline (from memory): The user source code, which contains an ordered set of calls to MPI routines.

Hardware 40

Hardware Transportation Performance Latency 40

Randon ASCII

OCTOBER 20, 2019

Normally ninja does an excellent job of saturating the system, keeping n+2 processes running at all times so that there is little idle time. I’ve seen that many times before, usually due to anti-virus software interfering. When figuring out why a system is idle the CPU Usage (Precise) table is ideal. What is System (4) doing.

Processing 60

Processing Systems Code Software 60

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.

Innovation 40

Innovation Infrastructure Engineering Software 40

O'Reilly Software

MARCH 7, 2018

Build a more scalable, composable, and functional architecture for interconnecting systems and applications. Software today is not typically a single program—something that is executed by an operator or user, producing a result to that person—but rather a service : something that runs for the benefit of its consumers, a provider of value.

Transportation 72

Transportation Java Programming Architecture 72

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

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

Tasktop

OCTOBER 4, 2019

We all know about the genius of Alan Turing in cracking the Enigma code, turning WWII in the Allies’ favor. But what about the contributions of his colleague Joan Clarke, a marveled code-breaker at Bletchley Park with a double-first degree in mathematics from Oxford? The wonderful world of computer science. “I Go ahead and do it!”

Technology 40

Technology Technology Education Programming 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

O'Reilly

JANUARY 17, 2023

What would you say is the job of a software developer? A layperson, an entry-level developer, or even someone who hires developers will tell you that job is to … well … write software. They’d say that the job involves writing some software, sure. But deep down it’s about the purpose of software. Pretty simple.

Tuning 130

Tuning Open Source AWS Software 130

Nick Desaulniers

APRIL 18, 2014

“It’s written in ones and zeroes - binary code. You talk to the computer in one of these languages, and a piece of software called a compiler converts it into machine language. This blog is meant for those who don’t know x86-64 assembly, but maybe know a little C, and are curious about code generation.

C++ 98

C++ Programming Code Virtualization 98

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. Instead, we found puzzle after puzzle. Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40

The Agile Manager

FEBRUARY 23, 2009

For example, in the Java world we can measure all kinds of attributes of code: overcomplicated expressions, wasteful use of resources, ghost code, duplicate code, complexity, and so forth. Good in the sense that code quality doesn’t need to be taken for granted, because we can measure attributes of the asset we’re creating.

Government 40

Government Metrics Java Code 40

O'Reilly

OCTOBER 19, 2021

This is both frustrating for companies that would prefer making ML an ordinary, fuss-free value-generating function like software engineering, as well as exciting for vendors who see the opportunity to create buzz around a new category of enterprise software. All ML projects are software projects.

DevOps 138

DevOps Software Engineering Infrastructure Open Source 138

The Agile Manager

AUGUST 30, 2013

There was business-partner-specific code and processes which people simply had no detailed knowledge of. The e-commerce software was a mess: only somebody familiar with the code could make sense of it. Knowledge sharing exercises were canceled due to last minute "customer emergencies". This removes barriers to change.

Code 40

Code Processing Innovation Development 40