The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. Best of all, our page can load much faster since everything is cached in Elasticsearch. Luckily, we have Kafka events that are emitted each time a piece of data changes.

Database 246

Database Cache Servers Performance 246

High Scalability

JANUARY 11, 2022

When the server receives a request for an action (post, like etc.) The entity C denotes the event where a user likes a post and entity D denotes the action when a user follows another user. We will use a cache having an LRU based eviction policy for caching user feeds of active users. High Level Design. Architecture.

Design 334

Design Media Storage Logistics 334

John McCalpin

FEBRUARY 17, 2025

The Multicore Era Over the past ~15 years, server processors from Intel and AMD have evolved from the early quad-core processors to the current monsters with over 50 cores per socket. GB/s peak DRAM bandwidth, requiring 6 concurrent 64-byte cache line accesses to be pending at all times to maintain full bandwidth.

Latency 71

Latency Hardware Cache Systems 71

The Netflix TechBlog

OCTOBER 8, 2024

Building on these foundational abstractions, we developed the TimeSeries Abstraction  — a versatile and scalable solution designed to efficiently store and query large volumes of temporal event data with low millisecond latencies, all in a cost-effective manner across various use cases. For example: {“device_type”: “ios”}.

Latency 239

Latency Storage Traffic Tuning 239

CSS Wizardry

SEPTEMBER 16, 2024

Reduce Transfer Size Broadly simplified… Web servers don’t send whole files at once—they chunk them into packets and send those. permitted the opening of multiple simultaneous connections to a server at once. Interestingly, 304 responses are still a form of redirect: the server is redirecting your visitor back to their HTTP cache.

Latency 234

Latency Cache Transportation Mobile 234

Dynatrace

AUGUST 30, 2019

And while these events are a great opportunity for us Dynatracers to share our thoughts with our users, it’s also an amazing opportunity to for us to learn from our users about how they use Dynatrace to optimize digital experiences and digital operations in both the public and private sector. Dynatrace news. APAC Series.

Cache 214

Cache Database Architecture Government 214

Dynatrace

JANUARY 31, 2024

The RAG process begins by summarizing and converting user prompts into queries that are sent to a search platform that uses semantic similarities to find relevant data in vector databases, semantic caches, or other online data sources. million AI server units annually by 2027, consuming 75.4+

Cache 276

Cache Azure Infrastructure Monitoring 276

tRPC

MARCH 20, 2025

mutation (resolver: ProcedureResolver , typeof unsetMarker, void>): MutationProcedure ">mutation ( async ({ " style="border-bottom: solid 2px lightgrey;">input }) => { (parameter) input: ReadableStream<any> }), }); {this.classList.remove("copied"),this.textContent="Copy"},2e3)">Copy React Server Components / Next.js

Servers 72

Servers Cache Processing Design 72

The Netflix TechBlog

SEPTEMBER 10, 2024

By Karthik Yagna , Baskar Odayarkoil , and Alex Ellis Pushy is Netflix’s WebSocket server that maintains persistent WebSocket connections with devices running the Netflix application. The other main use case was RENO, the Rapid Event Notification System mentioned above. Sample system diagram for an Alexa voice command.

Latency 234

Latency Cache Tuning Efficiency 234

Scalegrid

JULY 8, 2020

If the script has already performed writes to the server and must still be killed, use the SHUTDOWN NOSAVE to shutdown the server completely. In fact, this discussion applies to any high availability system that depends on polling the Redis servers for health: Long-running scripts will initially block client commands.

Servers 239

Servers Database Availability Monitoring 239

Smashing Magazine

MAY 16, 2022

Rethinking Server-Timing As A Critical Monitoring Tool. Rethinking Server-Timing As A Critical Monitoring Tool. In the world of HTTP Headers, there is one header that I believe deserves more air-time and that is the Server-Timing header. Setting Server-Timing. Sean Roberts. 2022-05-16T10:00:00+00:00.

Servers 111

Servers Monitoring Cache Network 111

The Netflix TechBlog

MAY 4, 2023

These include options where replay traffic generation is orchestrated on the device, on the server, and via a dedicated service. Moreover, allowing the device to execute untested server-side code paths can inadvertently expose an attack surface area for potential misuse. We will examine these alternatives in the upcoming sections.

Traffic 347

Traffic Latency Tuning Systems 347

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. Browsers now understand the classic shared HTTP cache behaviour as a privacy bug.

Cache 89

Cache Government Traffic Network 89

The Netflix TechBlog

MAY 19, 2023

To do so Netflix’s design required: An event based mechanism that could ingest information about application autoscaling groups. The community’s excitement and interest became apparent through comments, reactions, and conversations on the SpiceDB Discord server. Their attributes are used to scope permissions to varying degrees.

Cache 255

Cache Google Open Source Systems 255

CSS Wizardry

AUGUST 24, 2022

Improving each of these should hopefully chip away at the timings of more granular events that precede the LCP milestone, but whenever we’re making these kinds of indirect optimisation, we need to think much more carefully about how we measure and benchmark ourselves as we work. one can’t just whack async on a and hope for the best).

Benchmarking 266

Benchmarking Metrics Cache Network 266

The Netflix TechBlog

OCTOBER 16, 2019

Often the data is held in memory by consumers and used as a “total cache”, where it is accessed at runtime by client code and atomically swapped out under the hood. for example Open Connect Appliance cache configuration, supported device type IDs, supported payment method metadata, and A/B test configuration.

Cache 191

Cache Architecture Metrics Java 191

Dynatrace

NOVEMBER 3, 2021

Examples include a spike in memory utilization, a decrease in cache hit ratio, or an increase in CPU utilization. Log entries describe events, such as starting a process, handling an error, or simply completing some part of a workload. Experienced database administrators learn to spot patterns that can lead to common problems.

Monitoring 264

Monitoring Metrics DevOps Scalability 264

Percona

MARCH 27, 2023

On MySQL and Percona Server for MySQL , there is a schema called information_schema (I_S) which provides information about database tables, views, indexes, and more. The same tests have been executed in Percona Server for MySQL 5.7 Results for Percona Server for MySQL 5.7 Let’s see the results.

Cache 124

Cache Hardware Servers Benchmarking 124

Smashing Magazine

DECEMBER 23, 2020

The service workers enable the offline usage of the PWA by fetching cached data or informing the user about the absence of an Internet connection. The service workers also retrieve the latest data once the server connection is restored. When developing a PWA, you can cache the application shell’s resources and assets in the browser.

Cache 136

Cache Internet Internet Google 136

Dynatrace

AUGUST 12, 2019

With OneAgent installed on an application server, Davis, the Dynatrace AI causation engine, continuously analyzes all database statements within the context of your applications. With additional data from the database server, you’ll be able to resolve performance problems that are rooted deep in the database layer.

Database 170

Database Metrics Cache Servers 170

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. Some of DBLog’s features are: Processes captured log events in-order. Interleaves log with dump events, by taking dumps in chunks. Hence, downstream consumers have confidence to receive change events as they occur on a source.

Database 221

Database Traffic Transportation Open Source 221

Scalegrid

MARCH 28, 2024

Key Takeaways Redis offers complex data structures and additional features for versatile data handling, while Memcached excels in simplicity with a fast, multi-threaded architecture for basic caching needs. Redis is better suited for complex data models, and Memcached is better suited for high-throughput, string-based caching scenarios.

Cache 130

Cache Storage Scalability Architecture 130

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. Some of DBLog’s features are: Processes captured log events in-order. Interleaves log with dump events, by taking dumps in chunks. Hence, downstream consumers receive change events as they occur on a source.

Database 206

Database Traffic Transportation Open Source 206

The Netflix TechBlog

MARCH 5, 2019

the order of the rows on your Netflix home page, issuing content licenses when you click play, finding the Open Connect cache closest to you with the content you requested, and many more). Security Events Platform See open source project such as StreamAlert and Siddhi to get some general ideas.

Infrastructure 185

Infrastructure Cloud Scalability AWS 185

High Scalability

DECEMBER 18, 2018

Senior DevOps Engineer : Your engineering work will focus on using your deep knowledge of the web stack including firewalls, web applications, caches and data stores ­ to create innovative infrastructure architectures that are resilient, scalable, and blazingly fast. Fun and Informative Events. Advertise your event here!

Healthcare 122

Healthcare Best Practices DevOps Cache 122

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually. Caches | 12.4G Caches | 12.4G

Cache 114

Cache Database Virtualization Servers 114

Smashing Magazine

JUNE 29, 2021

Without build optimizations (incremental builds, caching, we will get to those soon) this will eventually become unmanageable as well — think about going through all images in a website: resizing, deleting, and/or creating new files over and over again. Under the hood, it simplifies a lot of the work to the server-side.

Cache 139

Cache Website Strategy Traffic 139

Scalegrid

MAY 11, 2024

However, it is limited by the available free memory amount, and all data is lost when the server stops. It uses a filesystem cache and write-ahead log for crash recovery. MongoDB makes use of both the filesystem cache and the WiredTiger internal cache. Compaction operation defragments data files & indexes.

Storage 130

Storage Engineering Cache Database 130

Dynatrace

APRIL 21, 2022

Figure 1 – Individual Host pages show performance metrics, problem history, event history, and related processes for each host. Missing caching layers. Figure 6 – Dynatrace gives you an in-depth view into what type of vulnerability was detected, which process was affected by this vulnerability, and the security events detected.

Azure 246

Azure Monitoring Virtualization Metrics 246

Smashing Magazine

NOVEMBER 22, 2021

A website’s performance can make or break its success, yet in August 2020, despite many improvements we had previously made, such as implementing Server-Side Rendering (SSR), the ratio of Wix websites with good Google Core Web Vitals (CWV) scores was only 4%. Dan Shappir. 2021-11-22T10:30:00+00:00. 2021-11-22T11:06:56+00:00.

Website 141

Website Performance Google Website Performance 141

SQL Performance

SEPTEMBER 17, 2019

Many database administrators find themselves having to support instances of SQL Server Reporting Services (SSRS), or at least the backend databases that are required for SSRS. These topics apply to both SQL Server Reporting Services as well as Power BI Report Server. Installation and support of SSRS can be confusing.

Tuning 67

Tuning Servers Database Best Practices 67

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. Best of all, our page can load much faster since everything is cached in Elasticsearch. Luckily, we have Kafka events that are emitted each time a piece of data changes.

Database 115

Database Cache Servers Performance 115

SQL Performance

AUGUST 23, 2019

In traditional row-mode execution plans, SQL Server may introduce a Bitmap operator as part of performing early semi join reduction before a parallel hash or merge join. There have been major improvements since the first appearance of the batch mode execution engine in SQL Server 2012. Background. The Query Optimizer. Bitmap Choice.

Servers 75

Servers Engineering Efficiency Retail 75

VoltDB

MARCH 21, 2024

The most obvious and common way this happens is when companies try to evolve their caches into a data platform that can, for example, be used as highly available enterprise key-value stores for volatile data. Let’s look at a typical scenario involving the javax cache API, also known as JSR107. How hard can it be?

Cache 52

Cache Database Storage Availability 52

Percona

JUNE 22, 2023

Defining high availability In general terms, high availability refers to the continuous operation of a system with little to no interruption to end users in the event of hardware or software failures, power outages, or other disruptions. If a primary server fails, a backup server can take over and continue to serve requests.

Availability 132

Availability Database Open Source Hardware 132

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. Best of all, our page can load much faster since everything is cached in Elasticsearch. Luckily, we have Kafka events that are emitted each time a piece of data changes.

Database 100

Database Cache Servers Performance 100

Dynatrace

SEPTEMBER 17, 2019

REDIS for caching. In the event that there’s a problem, Dynatrace will automatically highlight the hotspot and root cause in the different Dynatrace views. Their technology stack looks like this: Spring Boot-based Microservices. NGINX as an API Gateway. PostgreSQL & Elastic for data storage. AWS EKS for Integration and Production.

AWS 170

AWS Monitoring Ecommerce Lambda 170