The Netflix TechBlog

JUNE 14, 2023

The three strategies we will discuss today are AB Testing , Replay Testing, and Sticky Canaries. To launch Phase 1 safely, we used AB Testing. To launch Phase 2 safely, we used Replay Testing and Sticky Canaries. We knew we could test the same query with the same inputs and consistently expect the same results.

Traffic 357

Traffic Latency Metrics Cache 357

CSS Wizardry

JANUARY 31, 2019

When it comes to network performance, there are two main limiting factors that will slow you down: bandwidth and latency. Latency is defined as…. Where bandwidth deals with capacity, latency is more about speed of transfer 2. and reduction in latency. and reduction in latency. Bandwidth is defined as….

Latency 137

Latency Network Speed Servers 137

Scalegrid

AUGUST 26, 2020

ScaleGrid MySQL on Azure so you can see which provider offers the best throughput and latency performance. We measure latency in ms 95th percentile latency. During Read-Intensive Workloads, ScaleGrid manages to achieve up to 3 times higher throughput and averages 66% better latency compared to Azure Database.

Azure 299

Azure Benchmarking Database Latency 299

Scalegrid

APRIL 28, 2020

Does it affect latency? Yes, you can see an increase in latency. So, if you’re hosting your application in AWS or Azure and move your database to DigitalOcean, you will see an increase in latency. However, the average latencies between AWS US-East and the DigitalOcean New York datacenter locations are typically only 17.4

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Azure AWS Database Latency 344

The Netflix TechBlog

OCTOBER 26, 2021

Martin Tingley with Wenjing Zheng , Simon Ejdemyr , Stephanie Lane , and Colin McFarland This is the fourth post in a multi-part series on how Netflix uses A/B tests to inform decisions and continuously innovate on our products. Have a look at Part 1 (Decision Making at Netflix), Part 2 (What is an A/B Test?), Need to catch up?

Testing 211

Testing Metrics Latency Design 211

Scalegrid

JUNE 4, 2020

Compare Latency. lower latency compared to DigitalOcean for PostgreSQL. PostgreSQL DigitalOcean Performance Test. Now, let’s take a look at the throughput and latency performance of our comparison. Next, we are going to test and compare the latency performance between ScaleGrid and DigitalOcean for PostgreSQL.

Database 230

Database Latency Benchmarking Performance 230

Dynatrace

DECEMBER 27, 2022

Stable, well-calibrated SLOs pave the way for teams to automate additional processes and testing throughout the software delivery lifecycle. According to Google’s SRE handbook , best practices, there are “ Four Golden Signals ” we can convert into four SLOs for services: reliability, latency, availability, and saturation.

Software 306

Software Software Benchmarking Latency 306

Dynatrace

FEBRUARY 21, 2024

Quality gates after load/performance testing Teams can use quality gates to evaluate performance metrics. Before a new version of the application is deployed, the software is subject to a series of load tests that evaluate capacity and performance under a series of simulated traffic and application demands.

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Speed Software Software Latency 264

CSS Wizardry

OCTOBER 27, 2018

A lot of companies—even if they are aware that performance is key to their business—are often unsure of how, when, or where performance testing sits within their development lifecycle. Each kind of testing is listed chronologically—that is, you should do them in order—but all complement each other, and will ultimately feed into one another.

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Performance Testing Testing Performance Strategy 211

Scalegrid

OCTOBER 24, 2019

As organizations continue to migrate to the cloud, it’s important to get in front of performance issues, such as high latency, low throughput, and replication lag with higher distances between your users and cloud infrastructure. MySQL on AWS Performance Test. MySQL Performance Test Scenarios and Results. Amazon RDS.

AWS 183

AWS Latency Performance Performance Testing 183

Dynatrace

NOVEMBER 28, 2022

The new Amazon capability enables customers to improve the startup latency of their functions from several seconds to as low as sub-second (up to 10 times faster) at P99 (the 99th latency percentile). This can cause latency outliers and may lead to a poor end-user experience for latency-sensitive applications.

Lambda 246

Lambda AWS Serverless Latency 246

Dynatrace

AUGUST 21, 2024

These releases often assumed ideal conditions such as zero latency, infinite bandwidth, and no network loss, as highlighted in Peter Deutsch’s eight fallacies of distributed systems. Chaos engineering is a practice that extends beyond traditional failure testing by identifying unpredictable issues.

Engineering 262

Engineering Systems Latency Metrics 262

Scalegrid

JUNE 22, 2020

Compare Latency. On average, ScaleGrid achieves almost 30% lower latency over DigitalOcean for the same deployment configurations. Now that we’ve compared throughput performance, let’s take a look at ScaleGrid vs. DigitalOcean latency for MySQL. Read-Intensive Latency Benchmark. Balanced Workload Latency Benchmark.

Database 217

Database Benchmarking Latency Performance 217

The Netflix TechBlog

NOVEMBER 3, 2022

In that scenario, the system would need to deal with the data propagation latency directly, for example, by use of timeouts or client-originated update tracking mechanisms. We started seeing increased response latencies and leader servers running at dangerously high utilization.

Cache 233

Cache Latency Traffic Systems 233

Scalegrid

NOVEMBER 20, 2019

The test utilized a MySQL dataset created using Sysbench which had 3 tables with 50 million rows each. MySQL Test Bed Configuration. 95th Percentile Latency. The 95th percentile latency of queries was also 1.8 Performance Benefits of Rolling Index Creation. Creating the index on the slave. MySQL Instance Type.

Best Practices 239

Best Practices Latency Tuning Database 239

CSS Wizardry

MAY 31, 2019

Every new origin we need to visit needs a connection opening, and that can be very costly: DNS resolution, TCP handshakes, and TLS negotiation all add up, and the story gets worse the higher the latency of the connection is. On a slower, higher-latency connection, the story is much, mush worse. All completely avoidable. to just 3.6s.

Cache 274

Cache Latency Infrastructure Website 274

Dynatrace

JANUARY 14, 2022

The following figure shows the high-level architecture where any load testing solution (e.g. The optimization goal was to improve the application efficiency, that is to improve the ratio between service throughput and cloud costs while not increasing the application latency (e.g. below 500ms) and error rates (e.g. lower than 2%.).

Latency 246

Latency Tuning Efficiency AWS 246

The Netflix TechBlog

SEPTEMBER 18, 2024

These include challenges with tail latency and idempotency, managing “wide” partitions with many rows, handling single large “fat” columns, and slow response pagination. It also serves as central configuration of access patterns such as consistency or latency targets. Useful for keeping “n-newest” or prefix path deletion.

Latency 260

Latency Storage Cache Efficiency 260

The Netflix TechBlog

MARCH 1, 2021

It supports both high throughput services that consume hundreds of thousands of CPUs at a time, and latency-sensitive workloads where humans are waiting for the results of a computation. Local development tools including specialized test runners, code generators, and a command line interface. Productivity?—?Local Delivery?—?A

Serverless 235

Serverless Media Latency Social Media 235

The Netflix TechBlog

SEPTEMBER 8, 2020

Migration Testing Infrastructure Our monolith had been around for many years and hadn’t been created with functional and unit testing in mind, so those were independently bolted on by each UI team. For the migration, testing was a first-class citizen. Replay Testing Enter replay testing.

Latency 241

Latency Cache Java Traffic 241

Dynatrace

JUNE 1, 2023

Note : you might hear the term latency used instead of response time. Both latency and response time are critical to ensure reliability. Latency typically refers to the time it takes for a single request to travel from its source to its destination. Latency primarily focuses on the time spent in transit.

Latency 245

Latency Website Traffic Virtualization 245

Dynatrace

FEBRUARY 4, 2021

As a discipline, SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response. Monitoring SLOs and testing them in pre-production with intelligent quality gates to detect issues earlier in the development cycle.

Engineering 264

Engineering DevOps Government Latency 264

Smashing Magazine

FEBRUARY 12, 2025

What Network Latency Means For Time To First Byte Lets add up all the network round trips in the example above: 2 server connections: 6 round trips. Thats where network latency comes in, or network round trip time (RTT) if we look at the time it takes to send data to a server and receive a response in the browser.

Servers 78

Servers Latency Cache Website 78

CSS Wizardry

APRIL 22, 2020

This is because file-size is only one aspect of web performance, and whatever the file-size is, the resource is still sat on top of a lot of other factors and constants—latency, packet loss, etc. With those requirements in place, I grabbed a selection of origins and began testing: m.facebook.com. Running the Tests. yandex.com.

Latency 302

Latency Servers Website Speed 302

VoltDB

DECEMBER 11, 2024

By bringing computation closer to the data source, edge-based deployments reduce latency, enhance real-time capabilities, and optimize network bandwidth. Increased latency during peak loads. The post These 7 Edge Data Challenges Will Test Companies the Most in 2025 appeared first on Volt Active Data.

IoT 52

IoT Energy Logistics Latency 52

The Netflix TechBlog

JUNE 13, 2023

Our previous blog post presented replay traffic testing — a crucial instrument in our toolkit that allows us to implement these transformations with precision and reliability. Compared to replay testing, canaries allow us to extend the validation scope beyond the service level.

Traffic 285

Traffic Metrics Systems Strategy 285

Dynatrace

MAY 17, 2023

Validation tasks are then extended left to cover performance testing and release validation in a pre-production environment. Resilient applications with chaos testing in pre-production Another Dynatrace team uses a guardian as a safeguard during chaos testing. The queries are depicted below (sensitive data has been removed).

DevOps 246

DevOps Traffic Latency Best Practices 246

Dynatrace

OCTOBER 10, 2022

Application developers can spin up isolated test environments that pose no risk to current operations. Then, they can apply DevSecOps best practices to fully test new code and see what breaks without affecting current operations. Reduced latency. Difficult to test. Optimizes resources. Difficult to monitor.

Serverless 241

Serverless Infrastructure Lambda Latency 241

Dynatrace

FEBRUARY 15, 2023

SREs use Service-Level Indicators (SLI) to see the complete picture of service availability, latency, performance, and capacity across various systems, especially revenue-critical systems. This includes executing tests, running Dynatrace Synthetic checks, or creating tickets.

DevOps 246

DevOps Latency Traffic Best Practices 246

Dynatrace

FEBRUARY 4, 2021

As a discipline, SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response. Monitoring SLOs and testing them in pre-production with intelligent quality gates to detect issues earlier in the development cycle.

Engineering 245

Engineering DevOps Government Latency 245

Dynatrace

MAY 5, 2021

Keptn closes the loop of planning, testing, deployment, and analysis in Agile-like environments with the help of quality gates defined by service- and business-level indicators. For example, improving latency by as little as 0.1 latency is the number one reason consumers abandon mobile sites. Meanwhile, in the U.S.,

Benchmarking 246

Benchmarking Latency Speed Software 246

The Netflix TechBlog

JUNE 4, 2019

Because microprocessors are so fast, computer architecture design has evolved towards adding various levels of caching between compute units and the main memory, in order to hide the latency of bringing the bits to the brains. CFS is widely used and therefore well tested and Linux machines around the world run with reasonable performance.

Cache 258

Cache Latency Airlines Logistics 258

Dynatrace

JULY 22, 2024

Traces are used for performance analysis, latency optimization, and root cause analysis. This approach allows you to test and refine configurations, manage implementation complexity, and demonstrate value to stakeholders. Capture critical performance indicators such as request latency, error rates, and resource usage.

Latency 264

Latency Best Practices Metrics Open Source 264

DZone

FEBRUARY 26, 2021

To ensure that users get high-performing software that works seamlessly under all load conditions, performance testing is necessary. This test helps to measure the speed, scalability, reliability, and stability of software under varying loads, thus it ensures stable performance. Today, let's learn more about this testing type in depth.

Performance Testing 127

Performance Testing Testing Performance Latency 127

Dynatrace

JANUARY 13, 2022

Whereas RUM can capture all the nuances of your real users, providing a true picture into their experience, synthetic monitoring is great for proactive simulation and testing of the expected user experience. Providing insight into the service latency to help developers identify poorly performing code. Want to learn more?

Monitoring 245

Monitoring Mobile Latency Best Practices 245

Dynatrace

OCTOBER 4, 2021

API testing complements monitoring. This is done through testing. If there’s a problem during testing, developers can quickly identify the root cause by looking at the differences in code between the last stable release and the release that produced the issue.

Monitoring 245

Monitoring Latency Metrics Availability 245

Dynatrace

OCTOBER 3, 2024

Without distributed tracing, pinpointing the cause of increased latency could take hours or even days. Interact with data intuitively and easily and benefit from immediate, AI-supported insights. Trace your application Imagine a microservices architecture with hundreds of dependencies.

Performance 290

Performance Architecture Innovation Latency 290