Speed Curve

JANUARY 19, 2025

Let's kick off the new year by celebrating someone who has not just had a huge impact on web performance over the past few years, but who has even more exciting stuff in the works for the future: Annie Sullivan! Annie and her team navigate this arduous task with true passion for web performance and for improving the user experience.

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Performance Google Speed Metrics 98

Dynatrace

DECEMBER 13, 2023

Mobile applications (apps) are an increasingly important channel for reaching customers, but the distributed nature of mobile app platforms and delivery networks can cause performance problems that leave users frustrated, or worse, turning to competitors. What is mobile app performance? Issue remediation.

Best Practices 246

Best Practices Mobile Metrics Performance 246

Dynatrace

APRIL 8, 2020

— Excerpt from How Garbage Collection works in the Dynatrace Performance eBook) . However, garbage collection is one of the main sources of performance and scalability issues in any modern Java application. Optimize your code by finding and fixing the root cause of garbage collection problems.

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Speed Code Java Lambda 214

Smashing Magazine

MAY 9, 2022

Performance Game Changer: Browser Back/Forward Cache. Performance Game Changer: Browser Back/Forward Cache. With that caveat out of the way, let’s get to the guts of the article: What is the Back/Forward Cache and why does it matter so much? Didn’t The HTTP Cache Do All That Anyway? Barry Pollard.

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Cache Games Performance Website 106

Jos

JUNE 2, 2018

Web Performance is not only about understanding what makes a site fast. Performance is a feature and needs to be prioritized as such. Performance is a topic that has interested me for a long time. There was something gratifying in taking a code that takes minutes to run and make it run in a handful seconds.

Performance 237

Performance Speed Google Media 237

KeyCDN

NOVEMBER 19, 2020

In October 2015 KeyCDN released a free WordPress caching plugin called Cache Enabler. We did this because we wanted to give back to the WordPress community in the offering of a caching solution that was not complicated and most importantly, free. Over the last few months there have been many changes made to Cache Enabler.

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Cache Network Open Source Speed 116

Jos

APRIL 6, 2018

It turns out this component structure provides a great foundation to improve the performance of our sites. We are explicit about our dependencies, so we know what code we need to run to run a specific component. Lazy-loading and bundle splitting can have a huge impact on page performance: less code requested, parsed, and executed.

Code 147

Code Performance Media Google 147

Dynatrace

DECEMBER 21, 2023

Evaluating these on three levels—data center, host, and application architecture (plus code)—is helpful. Level 2: Hosts and containers You might run thousands of hosts and containers, many of which have been sized by prioritizing performance over energy consumption. Many of the same principles can be applied to green coding.

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Cloud Energy Best Practices Cache 264

Dynatrace

JULY 16, 2020

It wouldn’t scale and it wouldn’t perform either. Highly parallel and performant for any API call and doesn’t introduce much overhead. ? TenantCache: a cache to store tenant information and API token information and semi-permanent data to avoid unnecessary roundtrips. ? A high performance API gateway multiplexer.

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Cache Serverless Efficiency Tuning 289

Jos

APRIL 5, 2018

It turns out this component structure provides a great foundation to improve the performance of our sites. We are explicit about our dependencies, so we know what code we need to run to run a specific component. Lazy-loading and bundle splitting can have a huge impact on page performance: less code requested, parsed, and executed.

Code 130

Code Performance Google Media 130

Smashing Magazine

SEPTEMBER 28, 2022

Five Data-Loading Patterns To Improve Frontend Performance. Five Data-Loading Patterns To Improve Frontend Performance. When it comes to performance, you shouldn’t be stingy. Every unnecessary bit of JavaScript code you bundle and serve will be more code the client has to load and process. Active Memory Caching.

Cache 141

Cache Performance Servers Architecture 141

Alex Russell

MARCH 31, 2022

Browsers will cache tools popular among vocal, leading-edge developers. There's plenty of space for caching most popular frameworks. The best available proxy data also suggests that shared caches would have a minimal positive effect on performance. Suppose a user has only downloaded part of the cache.

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Cache Government Traffic Network 89

CSS Wizardry

MAY 31, 2019

Users might already have the file cached. If website-a.com links to [link] , and a user goes from there to website-b.com who also links to [link] , then the user will already have that file in their cache. Penalty: Caching. This makes it very safe and sensible to enforce a reasonably aggressive cache policy.

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Cache Latency Infrastructure Website 274

John McCalpin

FEBRUARY 17, 2025

Sustainable memory bandwidth using multi-threaded code has closely followed the peak DRAM bandwidth, typically delivering best case throughput of 75%-85% of the peak DRAM bandwidth in each generation. What about single-core performance? GT/s transfer rates, providing an aggregate peak memory bandwidth increase of 10x or more.

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Latency Hardware Cache Systems 71

Dynatrace

AUGUST 30, 2019

Digital Performance: 99% reduction in Response Time, from 18.2s Dynatrace Real User Monitoring (RUM) captures very detailed user behavior, as well as experience and performance information, about every user on your applications. Here are two I would start with: Web Performance Optimization with Dynatrace.

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Cache Database Architecture Government 214

The Netflix TechBlog

MAY 4, 2023

The first phase involves validating functional correctness, scalability, and performance concerns and ensuring the new systems’ resilience before the migration. These include Quality-of-Experience(QoE) measurements at the customer device level, Service-Level-Agreements (SLAs), and business-level Key-Performance-Indicators(KPIs).

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Traffic Latency Tuning Systems 347

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.

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Latency Cache Java Traffic 241

Smashing Magazine

FEBRUARY 12, 2025

Half of the time is instead spent on a cross-origin redirect — a separate HTTP request that returns a redirect response before we can even make the request that returns the websites HTML code. However, if your content isnt dynamic, you can also cache responses at the CDN edge node.

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Servers Latency Cache Website 78

CSS Wizardry

SEPTEMBER 16, 2024

It’s a magical tool that makes life as a performance engineer so much easier (and much more fun). As well as offering a whole host (ahem…) of other performance and security functionality, the primary benefit of using a CDN is simply geographic proximity. Cache Everything If you’re going to do something, try only do it once.

Latency 234

Latency Cache Transportation Mobile 234

Smashing Magazine

NOVEMBER 22, 2021

Improving The Performance Of Wix Websites (Case Study). Improving The Performance Of Wix Websites (Case Study). It was at this point that we realized we needed to make a significant change in our approach towards performance, and that we must embrace performance as part of our culture. Dan Shappir. Large preview ).

Website 141

Website Performance Google Website Performance 141

All Things Distributed

SEPTEMBER 3, 2013

Today, we added two important choices for customers running high performance apps in the cloud: support for Redis in Amazon ElastiCache and a new high memory database instance (db.cr1.8xlarge) for Amazon RDS. Today, we are further expanding the choices available for designing and developing highly scalable and high performance apps.

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Cache Cloud Performance Retail 97

CSS Wizardry

AUGUST 24, 2022

A thing I see developers do time and time again is make performance-facing changes to their sites and apps, but mistakes in how they measure them often lead to incorrect conclusions about the effectiveness of that work. Problems When Measuring Performance. For example, continuing our task to reduce CSS size: performance.

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Benchmarking Metrics Cache Network 266

Dynatrace

NOVEMBER 29, 2021

According to the official AWS announcement, Graviton2-based Lambda functions offer up to 34% better price-performance improvement. According to the official AWS announcement, Graviton2-based Lambda functions offer up to 34% better price-performance improvement. With Graviton2, you can reduce execution duration. Dynatrace service view.

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Lambda AWS Serverless Metrics 246

Dynatrace

MAY 17, 2023

But its underlying goal is quite humble and straightforward: it wants to enable you to observe an IT system (for example, a web application, infrastructure, or services) and gain insight to its behavior, such as performance, error rates, hot spots of executed instructions in code, and more.

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Metrics Open Source Traffic Cache 245

Dynatrace

NOVEMBER 28, 2022

For AWS Lambda, the largest contributor to startup latency is the time spent initializing an execution environment, which includes loading function code and initializing dependencies. With SnapStart enabled, function code is initialized once when a function version is published. What is Lambda? What is Lambda SnapStart?

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Lambda AWS Serverless Latency 246

Dynatrace

OCTOBER 7, 2021

Amazon compute solutions are designed to streamline resource provisioning and container management with two services: AWS Lambda : Lambda provides serverless compute infrastructure that lets you run code in response to predetermined events or conditions and automatically manage all compute resources required for these processes. Data Store.

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Serverless AWS Lambda Storage 325

Smashing Magazine

JUNE 20, 2019

Optimizing Google Fonts Performance. Optimizing Google Fonts Performance. The Google Fonts API does more than just provide the font files to the browser, it also performs a smart check to see how it can deliver the files in the most optimized format. Browser Caching. Danny Cooper. 2019-06-20T11:00:16+02:00. A 75% saving!

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Google Performance Cache Website 111

The Netflix TechBlog

JULY 12, 2019

The Tech Hollow , an OSS technology we released a few years ago, has been best described as a total high-density near cache : Total : The entire dataset is cached on each node?—?there there is no eviction policy, and there are no cache misses. Near : the cache exists in RAM on any instance which requires access to the dataset.

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Cache Architecture Latency Engineering 184

Dynatrace

SEPTEMBER 13, 2023

The framework comprises six pillars: Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimization, and Sustainability. And how can you verify this performance consistently across a multicloud environment that also uses Microsoft Azure and Google Cloud Platform frameworks?

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AWS Efficiency Azure Cloud 305

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. As the scale of the messages being processed increased and we were making more code changes in the message processor, we found ourselves looking for something more flexible. It served Pushy’s needs well for many years.

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Latency Cache Tuning Efficiency 234

The Netflix TechBlog

JULY 1, 2019

Development As part of developing this type of UI experience on any platform, we knew we would need to think about creating smooth, performant animations with a balance between quality and download size for the images and video previews, all without degrading the performance of the app. images no longer in the viewport).

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Cache Design Testing Development 167

Dynatrace

JUNE 18, 2019

It only took about 15 minutes to set up this approach with Dynatrace and get detailed insights into Android app performance. Build performance. If you want to include Dynatrace in development and staging builds, build performance is crucial. Moreover, features like Instant Run and the Gradle Build Cache weren’t supported.

Cache 35

Cache Java Monitoring Tuning 35

Dynatrace

NOVEMBER 5, 2019

Application Insights – Collects performance metrics of the application code. This requires the installation of an instrumentation package into the code making it a hands-on approach to monitoring. Distributed Tracing – Distributed Tracing / Code level insights for multiple technology stacks are achieved without any code changes.

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Azure Artificial Intelligence Metrics Innovation 198

SQL Performance

SEPTEMBER 25, 2019

Performance spools are lazy spools added by the optimizer to reduce the estimated cost of the inner side of nested loops joins. An example plan shape showing a lazy table performance spool is below: The questions I set out to answer in this article are why, how, and when the query optimizer introduces each type of performance spool.

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Performance Cache Servers Education 104

Dynatrace

DECEMBER 20, 2021

What users see in their browser window and the underlying HTML code are both governed by the DOM, which creates a tree-like structure for all HTML elements. Once you can see where users are having trouble, you can trace back actions to connected elements of underlying code and reduce the time from identifying an issue to resolving it.

Mobile 264

Mobile Website Analytics Cache 264

The Netflix TechBlog

NOVEMBER 4, 2019

This aggregator would need to perform more complex operations, such as searching for creatives by ranking even though the ranking data is stored two hops away in another service. Best of all, our page can load much faster since everything is cached in Elasticsearch. Also, the fan out step does not need to perform a full graph search.

Database 246

Database Cache Servers Performance 246

CSS Wizardry

AUGUST 7, 2019

only to find that the resource they’re requesting isn’t in that PoP ’s cache. Application runtime: It’s kind of obvious really, but the time it takes to run your actual application code is going to be a large contributor to your TTFB. Routing: If you are using a CDN—and you should be!—a during our time optimising iPlayer.

Latency 270

Latency Ecommerce Servers Mobile 270