The Netflix TechBlog

SEPTEMBER 8, 2020

To prepare ourselves for a big change in the tech stack of our endpoint, we decided to track metrics around the time taken to respond to queries. After some consultation with our backend teams, we determined the most effective way to group these metrics were by UI screen.

Latency 233

Latency Cache Java Traffic 233

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. Future releases may add additional metrics. Open-sourcing of the data We believe in open source at Percona.

Open Source 86

Open Source Database Operating System Programming 86

Particular Software

MARCH 28, 2022

With a saga, a business process that would otherwise have been implemented as a clunky batch job 1 can be built in a much more elegant and real-time manner. Critical time metric In NServiceBus version 7.7, So if you had saga timeouts from a year ago (which is a normal part of some business processes!),

Development 52

Development C++ Virtualization Metrics 52

Tasktop

FEBRUARY 1, 2021

In a project organization, this flow is spread across teams, functions, tools, processes and even external parties like vendors. Carving out the relevant pieces for each product is an iterative process. The more this process encroaches on the status quo, the more resistance you will encounter. . Measuring the Flow.

Logistics 52

Logistics Metrics Architecture Software 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. The metrics are only very rarely used to drive the team.

Metrics 52

Metrics Design Engineering C++ 52

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. In the context of MySQL performance evaluation, it simulates a typical online transaction processing (OLTP) workload on your MySQL database. DISK METRICS sysstat_io_nvme0n1_avg_wait_ms 8.32

Performance 54

Performance Benchmarking Cache Storage 54

Adrian Cockcroft

MARCH 17, 2020

There are many possible failure modes, and each exercises a different aspect of resilience. Staff should be familiar with recovery processes and the behavior of the system when it’s working hard to mitigate failures. Is the model of the controlled process looking at the right metrics and behaving safely?

Healthcare 52

Healthcare Government Airlines Systems 52

ScaleOut Software

AUGUST 20, 2020

Simplifying the Development Process with Mock Environments. The key to meeting these challenges is to process incoming telemetry in the context of unique state information maintained for each individual data source. In contrast, real-time digital twins analyze incoming telemetry from each data source and track changes in its state.

Cloud 52

Cloud Development Analytics Azure 52

ScaleOut Software

AUGUST 20, 2020

Simplifying the Development Process with Mock Environments. The key to meeting these challenges is to process incoming telemetry in the context of unique state information maintained for each individual data source. In contrast, real-time digital twins analyze incoming telemetry from each data source and track changes in its state.

Cloud 52

Cloud Development Analytics Azure 52

Rigor

NOVEMBER 22, 2019

To accomplish this goal, an organization needs to build internal processes and procedures that can operationalize a performance-first culture. According to Tim Kadlec : A performance budget is a clearly defined limit on one or more performance metrics that the team agrees not to exceed and that is used to guide design and development.

Performance 45

Performance Metrics Website Speed 45

Dynatrace

JUNE 1, 2023

Certain SLOs can help organizations get started on measuring and delivering metrics that matter. Response time Response time refers to the total time it takes for a system to process a request or complete an operation. This SLO enables a smooth and uninterrupted exercise-tracking experience. or above for the checkout process.

Latency 181

Latency Website Traffic Virtualization 181

Dynatrace

JUNE 1, 2023

Certain service-level objective examples can help organizations get started on measuring and delivering metrics that matter. Response time Response time refers to the total time it takes for a system to process a request or complete an operation. This SLO enables a smooth and uninterrupted exercise-tracking experience.

Traffic 173

Traffic Latency Website Virtualization 173

Dynatrace

JUNE 27, 2022

Real user monitoring (RUM) is a performance monitoring process that collects detailed data about users’ interactions with an application. RUM gathers information on a variety of performance metrics. RUM is ideally suited to provide real metrics from real users navigating a site or application. What is real user monitoring?

Best Practices 179

Best Practices Monitoring Wireless Traffic 179

Dynatrace

JULY 5, 2022

AIOps combines big data and machine learning to automate key IT operations processes, including anomaly detection and identification, event correlation, and root-cause analysis. To achieve these AIOps benefits, comprehensive AIOps tools incorporate four key stages of data processing: Collection. What is AIOps, and how does it work?

Artificial Intelligence 291

Artificial Intelligence Cloud Innovation Strategy 291

CSS Wizardry

NOVEMBER 3, 2020

Any time you run a test with WebPageTest, you’ll get this table of different milestones and metrics. Higher variance means a less stable metric across pages. I can see from the screenshot above that TTFB is my most stable metrics—no one page appears to have particularly expensive database queries or API calls on the back-end.

Speed 292

Speed Ecommerce Metrics Analytics 292

The Netflix TechBlog

DECEMBER 23, 2020

For example, the PID namespace makes it so that a process can only see PIDs in its own namespace, and therefore cannot send kill signals to random processes on the host. There are also more common capabilities that are granted to users like CAP_NET_RAW, which allows a process the ability to open raw sockets. User Namespaces.

Media 286

Media Metrics Systems Processing 286

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. Rethinking the process means digital transformation. Different teams have their own siloed monitoring solution.

Strategy 182

Strategy Performance Logistics Monitoring 182

Speed Curve

MARCH 5, 2023

"I made my pages faster, but my business and user engagement metrics didn't change. The performance poverty line is the plateau at which changes to your website’s rendering metrics (such as Start Render and Largest Contentful Paint) cease to matter because you’ve bottomed out in terms of business and user engagement metrics.

Performance 119

Performance C++ Metrics Ecommerce 119

Dynatrace

APRIL 14, 2020

Across the two days, there were sixteen new sessions – delivered for the first time – based on content derived from lab exercises developed and delivered by working with Dynatrace experts and our Partner communicate to showcase Dynatrace’s newest features. You can see a similar automation process on this GitHub repo.

AWS 168

AWS Lambda Performance Infrastructure 168

Dynatrace

APRIL 21, 2022

Most monitoring tools for migrations, development, and operations focus on collecting and aggregating the three pillars of observability— metrics, traces, and logs. Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host.

Azure 193

Azure Monitoring Virtualization Metrics 193

Dynatrace

MAY 28, 2020

While Google’s SRE Handbook mostly focuses on the production use case for SLIs/SLOs, Keptn is “Shifting-Left” this approach and using SLIs/SLOs to enforce Quality Gates as part of your progressive delivery process. This will enable deep monitoring of those Java,NET, Node, processes as well as your web servers.

Engineering 195

Engineering Performance Metrics Best Practices 195

Percona

AUGUST 8, 2023

The solution is proactive monitoring using time-lapse metrics monitoring like what you would get with Percona Monitoring and Management (PMM). Using time-lapse metrics monitoring, we can monitor overall disk consumption and the rate at which consumption occurs and then predict how much time we have left before we run out of space.

Traffic 87

Traffic Cache Monitoring Database 87

Speed Curve

MARCH 5, 2023

"I made my pages faster, but my business and user engagement metrics didn't change. The performance plateau is the point at which changes to your website’s rendering metrics (such as Start Render and Largest Contentful Paint) cease to matter because you’ve bottomed out in terms of business and user engagement metrics.

Performance 52

Performance C++ Metrics Ecommerce 52

Alex Russell

FEBRUARY 21, 2023

is astonishingly dense with delayed features, inadvertantly emphasising just how far behind WebKit has remained for many years and how effective the Blink Launch Process has been in allowing Chromium to ship responsibly while consensus was witheld in standards by Apple. Regardless, Safari 16.4 31st : Web Share changes Feb. Safari 16.4

Energy 79

Energy Games Engineering Design 79

Dynatrace

JUNE 1, 2021

Application performance monitoring (APM) is the practice of tracking key software application performance metrics using monitoring software and telemetry data. This may result in unnecessary troubleshooting exercises and finger-pointing, not to mention wasted time and money. Dynatrace news. What does APM stand for?

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

The Agile Manager

OCTOBER 28, 2007

They go on to report that 70% of the cases of these 7 chronic illnesses are preventable through lifestyle change: diet, exercise, avoiding cigarettes and what not. We are more tolerant to external risk factors because we don’t accumulate process debt or technical debt that makes it difficult for us to absorb risk.

Government 40

Government Retail Energy Code 40

O'Reilly

JANUARY 17, 2023

You might say that the outcome of this exercise is a performant predictive model. Second, this exercise in model-building was … rather tedious? You need to coordinate with stakeholders and product managers to suss out what kinds of models you need and how to embed them into the company’s processes.

Tuning 130

Tuning Open Source AWS Software 130

Testsigma

JANUARY 6, 2022

Tracking the processes to plan better. During a testing process, you need to track and plan the testing activities such as: Test planning Test scripts writing Test data creation and management Test versioning, review, and approvals Test case scheduling Test reporting. helps in having a clear picture of the testing process.

Testing 52

Testing Internet Internet Testing Tools 52

Tasktop

OCTOBER 30, 2019

Getting feedback from auditors from get-go can simplify the process, explained Wolf. Jeff has been leading his organization’s software delivery transformation with the help of Flow Metrics. By understanding where the real issues were through Flow Metrics, Jeff was able to change the conversation with the business. “It

DevOps 8

DevOps Education Innovation Metrics 8

CSS - Tricks

APRIL 1, 2021

Site performance is potentially the most important metric. Having a slow site might leave you on page 452 of search results, regardless of any other metric. With all of this in mind, I thought improving the speed of my own version of a slow site would be a fun exercise. billion if the site slowed down by just one second.

Cache 92

Cache Social Media Media Website 92

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Staff should be familiar with recovery processes and the behavior of the system when it’s working hard to mitigate failures. A resilient system continues to operate successfully in the presence of failures.

Latency 52

Latency Engineering Systems Hardware 52

The Morning Paper

JULY 4, 2019

Moreover, just like an A/B test, we’ll be collecting metrics while the experiment is underway and performing statistical analysis at the end to interpret the results. In all cases we need to be able to carefully monitor the impact on the system, and back out if things start going badly wrong. On error rates.

Latency 77

Latency Engineering Metrics Traffic 77

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Staff should be familiar with recovery processes and the behavior of the system when it’s working hard to mitigate failures. A resilient system continues to operate successfully in the presence of failures.

Latency 53

Latency Engineering Systems Hardware 53

SQL Performance

NOVEMBER 30, 2021

If you’re interested, I wrote a post a while back with some T-SQL code that scans the buffer pool and gives some metrics, using the DMV sys.dm_os_buffer_descriptors. Index_A has 200,000 pages at its leaf level, and Index_B has 1 million pages at its leaf level, so a complete scan of Index_B requires processing five times more pages.

Efficiency 54

Efficiency Servers Database Cache 54

The Netflix TechBlog

OCTOBER 14, 2021

The end result is the first major update to BetterTLS since its first release : a new suite of tests to exercise TLS implementations’ certificate path building. And passing all of the tests in the BetterTLS test suite is a useful metric for establishing that confidence. What is Certificate Path Building?

Servers 165

Servers Testing Best Practices Java 165

HammerDB

JANUARY 5, 2019

Some opinions claim that “Benchmarks are meaningless”, “benchmarks are irrelevant” or “benchmarks are nothing like your real applications” However for others “Benchmarks matter,” as they “account for the processing architecture and speed, memory, storage subsystems and the database engine.”

Benchmarking 40

Benchmarking Database Social Media Scalability 40

The Netflix TechBlog

MARCH 6, 2019

—?Mounting object storage in Netflix’s media processing platform By Barak Alon (on behalf of Netflix’s Media Cloud Engineering team) MezzFS (short for “Mezzanine File System”) is a tool we’ve developed at Netflix that mounts cloud objects as local files via FUSE. Encoding is not a one-time process?—?large We have one file?—?the

Media 214

Media Storage Processing Cache 214