The Netflix TechBlog

JUNE 14, 2023

Before GraphQL: Monolithic Falcor API implemented and maintained by the API Team Before moving to GraphQL, our API layer consisted of a monolithic server built with Falcor. A single API team maintained both the Java implementation of the Falcor framework and the API Server. To launch Phase 1 safely, we used AB Testing.

Traffic 358

Traffic Latency Metrics Cache 358

High Scalability

SEPTEMBER 3, 2019

Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker.

Open Source 55

Open Source Cache C++ Database 55

DZone

APRIL 9, 2020

Insufficient dispatcher caching. Lack of browser caching. Insufficient server sizing or incorrect architecture. Expensive requests such as expensive searches or inefficient application code, components, etc. Lack of proper maintenance. Lack of CDN. Too many scripts loaded on-page and loaded at top of the page.

Website Performance 264

Website Performance Website Performance Cache 264

The Netflix TechBlog

NOVEMBER 12, 2024

Best Effort Regional Counter This type of counter is powered by EVCache , Netflix’s distributed caching solution built on the widely popular Memcached. Rollup Cache To optimize read performance, these values are cached in EVCache for each counter. With this approach, the counts continually converge to their latest value.

Latency 251

Latency Cache Infrastructure Strategy 251

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. Critical assets are far too valuable to leave on someone else’s servers. Penalty: Caching. Risk: Service Shutdowns.

Cache 275

Cache Latency Infrastructure Website 275

The Netflix TechBlog

SEPTEMBER 18, 2024

In this example configuration, the ngsegment namespace is backed by both a Cassandra cluster and an EVCache caching layer, allowing for highly durable persistent storage and lower-latency point reads. "persistence_configuration":[ Developers just provide their data problem rather than a database solution!

Latency 261

Latency Storage Cache Efficiency 261

DZone

NOVEMBER 25, 2019

Monitoring is very essential for modern applications, modern applications are highly distributed in nature and have different dependencies like database, service, caching and many more. SLA is an agreement between client and server, It accounts for reliability, responsiveness and other service-level metrics.

Monitoring 286

Monitoring Cache Metrics Database 286

Dynatrace

JANUARY 16, 2023

On-premises data centers invest in higher capacity servers since they provide more flexibility in the long run, while the procurement price of hardware is only one of many cost factors. Of the organizations in the Kubernetes survey, 71% run databases and caches in Kubernetes, representing a +48% year-over-year increase.

Open Source 347

Open Source Java Operating System Programming 347

Scalegrid

AUGUST 30, 2019

Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker. Redis Strings Use Cases. Redis Sets.

Cache 232

Cache Ecommerce Social Media Database 232

CSS Wizardry

OCTOBER 16, 2023

If you wanted to cache a file ‘forever’, you’d probably use a Cache-Control header like this: Cache-Control: max-age=31536000 This instructs any cache that it may store and reuse a response for one year (60 seconds × 60 minutes × 24 hours × 365 days = 31,536,000 seconds ). But why one year? Why not 10 years? 6bb70b2a.css.

Cache 200

Cache C++ Servers Internet 200

Percona

APRIL 14, 2023

A shared characteristic in most (if not all) databases, be them traditional relational databases like Oracle, MySQL, and PostgreSQL or some kind of NoSQL-style database like MongoDB, is the use of a caching mechanism to keep (a copy of) part of the data in memory. How do you know if your MySQL database caching is operating efficiently?

Cache 96

Cache Efficiency Database Monitoring 96

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 225

Latency Cache Transportation Mobile 225

DZone

DECEMBER 30, 2020

Server page faults/second. Cache hit ratio. Below are some of the key metrics that need to be monitored during performance testing: CPU utilization. Heap memory utilization. Number of active/daemon threads. Number of classes loaded. Active total sessions. SSL transactions/second. Active/total DB pool connections. Application log.

Servers 133

Servers Performance Cache Performance Testing 133

High Scalability

FEBRUARY 17, 2021

Redis Server: 5.07, x86/64. MongoDB server: 4.4.2, BangDB server: 2.0.0, Application example: user profile cache, where profiles are constructed elsewhere (e.g., However, user can run the bench for as many numbers as they practically find suitable. About YCSB. Following configurations were used for the evaluation purpose.

Benchmarking 308

Benchmarking Latency C++ Database 308

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

CSS Wizardry

AUGUST 7, 2019

A lot of people surmise that TTFB is merely time spent on the server, but that is only a small fraction of the true extent of things. TTFB isn’t just time spent on the server, it is also the time spent getting from our device to the sever and back again (carrying, that’s right, the first byte of data!). Expect closer to 75ms.

Latency 271

Latency Ecommerce Servers Mobile 271

The Netflix TechBlog

OCTOBER 29, 2020

Poor network connectivity coupled with frequently changing configuration values in response to user activity means that on-device rule evaluation is preferable to server-side evaluation. Disk cache Of course, network connectivity may not always be available so downloaded rule sets need to be cached to disk.

Mobile 279

Mobile Cache Network Technology 279

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

Dynatrace

AUGUST 30, 2019

Missing Cache Settings – Make sure you cache resources that don’t change often on the browser or use a CDN. Impacting Server-Side Requests: Dynatrace allows you to drill into your server-side requests to understand why your business logic is executing slow or fails. Missing retry and failover implementations.

Cache 202

Cache Database Architecture Government 202

SQL Shack

NOVEMBER 23, 2021

This article explores the Hybrid Buffer Pool feature available in the SQL Server 2019. Introduction SQL Server uses Dynamic Random Access Memory (D-RAM) buffer pool for caching data pages retrieved from the disk. The buffer cache stores the page and writes back to disk only if it is modified.

Servers 93

Servers Cache Availability Performance 93

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

High Scalability

JANUARY 11, 2022

When the server receives a request for an action (post, like etc.) We will use a cache having an LRU based eviction policy for caching user feeds of active users. Generating machine learning based personalized recommendations to discover new people, photos, videos, and stories relevant one’s interest. High Level Design.

Design 334

Design Media Storage Logistics 334

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. To act on the change, we need a GraphQL server that supports introspection.

Database 247

Database Cache Servers Performance 247

Percona

NOVEMBER 1, 2023

MySQL Server – Community Edition The problem applies to all versions of the upstream MySQL Community up to 8.0.23. Here is an example scenario you may end up here: mysql > select @@version,@@version_comment; + --+ + | @@version | @@version_comment | + --+ + | 5.7.43 | MySQL Community Server (GPL) | + --+ + 1 row in set (0.00

Servers 103

Servers Database Cache C++ 103

The Netflix TechBlog

MAY 19, 2023

The community’s excitement and interest became apparent through comments, reactions, and conversations on the SpiceDB Discord server. Over time, each node caches a subset of subproblems to support a distributed cache, reduce the datastore load, and achieve SpiceDB’s horizontal scalability.

Cache 255

Cache Google Open Source Systems 255

Dynatrace

OCTOBER 7, 2021

Serverless architecture shifts application hosting functions away from local servers onto those managed by providers. This means you no longer have to provision, scale, and maintain servers to run your applications, databases, and storage systems. Let’s get started. Serverless architecture: A primer. Application integration.

Serverless 287

Serverless AWS Lambda Storage 287

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 95

Servers Monitoring Cache Network 95

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 210

Cache Azure Infrastructure Monitoring 210

SQL Performance

OCTOBER 7, 2020

Its raison d’être is to cache result rows from a plan subtree, then replay those rows on subsequent iterations if any correlated loop parameters are unchanged. Table-valued functions use a table variable, which can be used to cache and replay results in suitable circumstances. Spools are the least costly way to cache partial results.

Servers 106

Servers Cache Azure Performance 106

SQL Performance

SEPTEMBER 21, 2022

Even SQL Server stores some flag-based data using bitwise representation. Examples include the following: The set_options and required_cursor_options cached plan attributes, which you obtain using the sys.dm_exec_plan_attributes DMF. Setting the server configuration option “ user options” using bitwise representation.

Servers 122

Servers C++ Code Cache 122

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. What if we wanted to move past Pushy’s pattern of delivering server-side messages?

Latency 235

Latency Cache Tuning Efficiency 235

Scalegrid

JANUARY 25, 2024

You will need to know which monitoring metrics for Redis to watch and a tool to monitor these critical server metrics to ensure its health. Evaluating factors like hit rate, which assesses cache efficiency level, or tracking key evictions from the cache are also essential elements during the Redis monitoring process.

Metrics 130

Metrics Monitoring Latency Cache 130

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 Architecture Scalability 130

Percona

APRIL 7, 2023

If we were to select the most important MySQL setting, if we were given a freshly installed MySQL or Percona Server for MySQL and could only tune a single MySQL variable, which one would it be? Sysbench ran on a third server, which I’ll refer to as the application server (APP).

Tuning 139

Tuning Cache Servers Benchmarking 139

Scalegrid

OCTOBER 2, 2019

This Redis management solution allows startups up to enterprise-level organizations automate their Redis operations on Microsoft Azure dedicated cloud servers, alongside their other open source database deployments, including MongoDB , MySQL and PostgreSQL. PALO ALTO, Calif.,

Azure 37

Azure Cloud Open Source Virtualization 37

The Netflix TechBlog

SEPTEMBER 8, 2020

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. Latencies The old api service was running on the same “machine” that also cached a lot of video metadata (by design). This meant that data that was static (e.g.

Latency 242

Latency Cache Java Traffic 242

Percona

SEPTEMBER 28, 2023

Whenever you install your favorite MySQL server on a freshly created Ubuntu instance, you start by updating the configuration for MySQL, such as configuring buffer pool, changing the default datadir director, and disabling one of the most outstanding features – query cache. It’s a nice thing to do, but first things first.

Servers 119

Servers Best Practices Database Open Source 119