The Netflix TechBlog

DECEMBER 19, 2024

For instance, you can use a Config to define a default value for a parameter which can be overridden by a real-time event as a run is triggered. this could take a few minutes) All packages already cached in s3. All environments already cached in s3. training.mP4eIStG.yaml run --prediction_date20241006 Metaflow 2.12.39+nflxfastdata(2.13.5);nflx(2.13.5);metaboost(0.0.27)

Best Practices 204

Best Practices Cache Metrics Code 204

John McCalpin

FEBRUARY 17, 2025

“Latency” is the duration from the execution of a load instruction (to an address that misses in all the caches), and the completion of that load instruction when the data is returned from memory. 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

Dynatrace

JANUARY 16, 2023

Of the organizations in the Kubernetes survey, 71% run databases and caches in Kubernetes, representing a +48% year-over-year increase. Together with messaging systems (+36% growth), organizations are increasingly using databases and caches to persist application workload states.

Open Source 358

Open Source Java Operating System Programming 358

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.

Serverless 325

Serverless AWS Lambda Storage 325

The Netflix TechBlog

APRIL 27, 2023

Moreover, common database optimizations like caching recently queried data don’t really work for alerting queries because, generally speaking, the last received datapoint is required for correctness. It became clear to us that we needed to solve the scalability problem with a fundamentally different approach.

Storage 297

Storage Cache Metrics Database 297

High Scalability

JANUARY 11, 2022

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. Subsequently, the data entities C and D denote the different actions which users may take. Optimization.

Design 334

Design Media Storage Logistics 334

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.

Cache 184

Cache Architecture Latency Engineering 184

The Netflix TechBlog

JUNE 14, 2023

The GraphQL shim enabled client engineers to move quickly onto GraphQL, figure out client-side concerns like cache normalization, experiment with different GraphQL clients, and investigate client performance without being blocked by server-side migrations. To launch Phase 1 safely, we used AB Testing.

Traffic 357

Traffic Latency Metrics Cache 357

All Things Distributed

JULY 14, 2015

Streams provide you with the underlying infrastructure to create new applications, such as continuously updated free-text search indexes, caches, or other creative extensions requiring up-to-date table changes. Triggers are powerful mechanisms that react to events dynamically and in real time.

Database 158

Database Lambda AWS IoT 158

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

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

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.

Cache 276

Cache Azure Infrastructure Monitoring 276

DZone

JUNE 10, 2019

While you can look at what's in cache through the DMVs to see the queries there, you don't get any real history and you don't get any detail of when the executions occurred. If you really want a detailed analysis of which query used the most CPU, you need to first set up an Extended Events session and then consume that data.

Cache 100

Cache Database Performance 100

The Netflix TechBlog

NOVEMBER 4, 2019

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. The first step is to listen to those events and act accordingly. Keeping Everything Up To Date Indexing the data once isn’t enough.

Database 246

Database Cache Servers Performance 246

The Netflix TechBlog

SEPTEMBER 18, 2024

HashMap<String, SortedMap<Bytes, Bytes>> For complex data models such as structured Records or time-ordered Events, this two-level approach handles hierarchical structures effectively, allowing related data to be retrieved together. This model supports both simple and complex data models, balancing flexibility and efficiency.

Latency 260

Latency Storage Cache Servers 260

Dynatrace

JULY 16, 2020

TenantCache: a cache to store tenant information and API token information and semi-permanent data to avoid unnecessary roundtrips. ? These API tokens are then stored in a local cache (the TenantCache using Redis), alongside with other rather static information of the environments: ? tenant-token the current API token to use.

Cache 289

Cache Serverless Efficiency Tuning 289

CSS Wizardry

SEPTEMBER 16, 2024

Interestingly, 304 responses are still a form of redirect: the server is redirecting your visitor back to their HTTP cache. Ensure you aren’t wastefully revalidating still-fresh resources : These files were revalidated for a repeat page view as they all carried Cache-Control: public, max-age=0, must-revalidate.

Latency 234

Latency Cache Transportation Mobile 234

Dynatrace

DECEMBER 21, 2023

After identifying about 100 idle host instances to be shut down, they learned that these hosts were provisioned in anticipation of upscaling to support an upcoming major sales event. Implement appropriate caching layers (for example, read-only cache for static data). Reduce inter-process communications overhead.

Cloud 264

Cloud Energy Best Practices Cache 264

The Netflix TechBlog

SEPTEMBER 10, 2024

The other main use case was RENO, the Rapid Event Notification System mentioned above. This also enables things like subscribing to device events to know when another device comes online and when they’re available to pair or send a message to. A basic order of events for a device to device message.

Latency 234

Latency Cache Tuning Efficiency 234

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. 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

DECEMBER 20, 2021

Think of a session replay like a movie based on real events. These changes are known as “events,” and they occur any time a user interacts with your site or application, such as when they swipe the screen, move the mouse or input text. Streamlined asset caching: Asset caching is critical for creating accurate replays.

Mobile 264

Mobile Website Analytics Cache 264

The Netflix TechBlog

MARCH 7, 2024

Explainer flow is event-triggered by an upstream flow, such Model A, B, C flows in the illustration. A hugely important detail that often goes overlooked is event-triggering : it allows a team to integrate their Metaflow flows to surrounding systems upstream (e.g. ETL workflows), as well as downstream (e.g.

Systems 235

Systems Media Cache Open Source 235

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

NOVEMBER 28, 2022

Lambda then takes a snapshot of the memory and disk state of the initialized execution environment, persists the encrypted snapshot, and caches it for low-latency access. Saving your cloud operations and site reliability engineering teams hours of guesswork and manual tagging, the Davis AI engine analyzes billions of events in real time.

Lambda 246

Lambda AWS Serverless Latency 246

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

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.

Benchmarking 266

Benchmarking Metrics Cache Network 266

Dynatrace

SEPTEMBER 13, 2023

Dynatrace AutomationEngine workflows automate release validation using AWS Well-Architected pillars With Dynatrace, you can create workflows that automate various tasks based on events, schedules or Davis problem triggers. Workflows are powered by a core platform technology of Dynatrace called the AutomationEngine.

AWS 305

AWS Efficiency Azure Cloud 305

O'Reilly Software

JUNE 12, 2018

The benefits of modeling data as events as a mechanism to evolve our software systems. Enter streams of events, specifically the kinds of streams that technology like Kafka makes possible. Continue reading Microservices, events, and upside-down databases. The concepts may well seem odd at first, but stick with them.

Database 72

Database Cache Architecture Latency 72

CSS Wizardry

NOVEMBER 9, 2018

In the unlikely event that you don’t have access to the CSS file that contains the @import. We’re bound to an inefficient caching strategy: a change to, say, the background colour of the currently-selected day on a date picker used on only one page, would require that we cache-bust the entirety of app.css. in your HTML.

Network 278

Network Performance Media Cache 278

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

tRPC

MARCH 20, 2025

To fix this, we've improved support for React Server Components (RSC) and added prefetch helpers to make it easier to utilize the power of RSCs running exclusively on the server, in combination with the highly dynamic client-side cache of React Query. query (() => '.' ), }, // Equivalent of: nested2: router ({ proc: publicProcedure.

Servers 72

Servers Cache Processing Design 72

Dynatrace

NOVEMBER 13, 2020

When Davis detects deviations from this baseline (for example, a sudden dip in usage or a user action that lasts longer than expected), it generates a problem event , identifies the root cause of the problem, and sends notifications based on the configured alerting profile. User actions in Dynatrace are more than just simple events.

Code 244

Code Mobile Monitoring Infrastructure 244

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. When developing a PWA, you can cache the application shell’s resources and assets in the browser. Cached content with IndexedDB. Cache first, then network. Service Workers.

Cache 136

Cache Internet Internet Google 136

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

Dynatrace

OCTOBER 15, 2021

Logs are important because you’ll naturally want an event-based record of any notable anomalies across the system. Timestamps, values, and even event names can preemptively uncover a growing problem that needs remediation. This occurs once data is safely stored within a local cache. Benefits of OpenTelemetry.

Open Source 246

Open Source Metrics Cloud Transportation 246

Percona

APRIL 24, 2023

The more indexes, the more the requirement of memory for effective caching. Indexes need more cache than tables Due to random writes and reads, indexes need more pages to be in the cache. Cache requirements for indexes are generally much higher than associated tables. This helps in crash recovery and replication.

Tuning 139

Tuning Cache Storage Database 139

CSS Wizardry

SEPTEMBER 28, 2023

Notice below how our is momentarily considered our LCP candidate at 1.0s , before ultimately being replaced by the at 2.5s : Blue shading shows an LCP candidate; green shading and/or a red border shows the actual LCP element and event. we get our LCP event in full. What if Chrome finds a later element of the same size?

Games 329

Games Ecommerce Cache Systems 329