嘘、大嘘、そして (Cloudflare の) 統計 : Cloudflare のパフォーマンステストの欠陥を証明
嘘、大嘘、そして (Cloudflare の) 統計 : Cloudflare のパフォーマンステストの欠陥を証明 数週間前、Fastly の競合企業の一つである Cloudflare が、自社のエッジ・コンピューティング・プラットフォームは Compute@Edge と比べて約3倍も高速であると 自社のブログ記事で断言しました。しかし Cloudflare によるこの見当違いな主張は、事実とは異なる印象を与えるために統計が利用されるリスクについて学ぶ良い機会でもありました。この記事では、Cloudflare のテスト手法を分析するとともに、より有用で科学的な比較による結果をご紹介します。 世の中には「嘘、大嘘、そして統計」の3種類の嘘が存在すると言われています。これは統計の説得力を皮肉った言葉であり、統計の中には信用できるものもありますが、今回 Cloudflare が公開した統計は明ら
Improving HTTP with structured header fields
Why FastlyProductsServicesSolutionsDevelopersPartnersResourcesPricing Improving HTTP with structured header fieldsThe HTTP community has been busy modernising the web’s protocol over the last decade, with multiple revisions of the core specification, a number of extensions, HTTP/2, and now HTTP/3. Unfortunately, the way we define and use HTTP header fields hasn’t changed much since the beginning,
Network error logging: collecting failure conditions from end users
Why FastlyProductsServicesSolutionsDevelopersPartnersResourcesPricing User error logs collected | FastlyThere's almost no such thing as too much visibility when it comes to how users interact with web sites and applications. To that end, a holistic view that tells us about these experiences, their performance characteristics, and failure/error conditions will never stop being useful. So any mechan
The headers we don't want
Let’s look at the unnecessary headers and see why we don’t need them, and what we can do about it. Vanity (server, x-powered-by, via) You may be very proud of your choice of server software, but most people couldn’t care less. At worst, these headers might be divulging sensitive data that makes your site easier to attack. Server: apache X-Powered-By: PHP/5.1.1 Via: 1.1 varnish, 1.1 squid RFC7231 a
CDN Image Optimization | Fastly
Rapid image processing at the edgeImage Optimizer Image Optimizer can cut page load times to delight your visitors and improve search engine rankings — all without burdening your team and without having to invest in a costly dedicated solution. Plus reduce manual effort by transforming your images automatically instead of creating new variations each time you need to crop, resize, or make any othe
Update to our TLS 1.0 and 1.1 deprecation plan
Why FastlyProductsServicesSolutionsDevelopersPartnersResourcesPricing Update to our TLS 1.0 and 1.1 deprecation planNote: here's the latest update to our TLS 1.0 deprecation plan. Last year, we announced our deprecation plan for TLS 1.0 and 1.1 with a timeline that was driven by the PCI DSS v3.1 standard. Since our original post, the PCI Security Standards Council has updated their guidance and no
Optimizing HTTP/2 server push with Fastly
Optimizing HTTP/2 server push with FastlySince we made HTTP/2 generally available in November 2016, h2 traffic has been steadily growing as more customers migrate to the new version of the protocol; since the beginning of 2017, h2 traffic has increased by over 400% and h2 requests now make up more than 25% of the total requests on Fastly’s network. Last year, I did a couple of talks about h2 and i
Caching the Uncacheable: CSRF Security
Why FastlyProductsServicesSolutionsDevelopersPartnersResourcesPricing Caching the Uncacheable: CSRF SecurityCross-Site Request Forgery attacks are a risk for any web application that accepts user data. The best mitigation technique is to use an "authenticity token" that the server generates when building forms for the user and checks when the forms are submitted. Unfortunately, the presence of thi
Microservices war stories
Microservices war storiesRecently I had the opportunity to present on the topic of microservices at OSCON and I covered some of the pitfalls and lessons learned from building several service-oriented systems. The talk explored some of the problems with building, testing, and deploying a functional microservice architecture, from data loss to dependency nightmares, drawing on war stories collected
HTTP/2 is now in General Availability
HTTP/2 is now in General AvailabilityWe’re pleased to announce that HTTP/2 is now in General Availability (GA). Our team has been working diligently to tightly integrate HTTP/2 support into our existing environment. We’ve taken measures to ensure that our design and testing of this component adheres to the HTTP/2 protocol standards and can be seamlessly deployed across our entire network. Enabling
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