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 357

Traffic Latency Metrics Cache 357

Dynatrace

DECEMBER 13, 2024

Collector Custom Resource A custom resource (CR) represents a customization of a specific Kubernetes installation that isnt necessarily available in a default Kubernetes installation; CRs help make Kubernetes more modular. There are two versions available: v1alpha1 : apiVersion: opentelemetry.io/v1alpha1 spec.containers[*].name}'

Java 246

Java Servers Code Metrics 246

Dynatrace

MARCH 17, 2021

A single OneAgent instance can handle the monitoring of many types of entities, including servers, applications, services, databases, and more. You want to optimize your Citrix landscape with insights into user load and screen latency per server? Your SAP instance is slow, and you don’t know which transactions or users are affected?

Metrics 243

Metrics Monitoring Network Technology 243

Percona

SEPTEMBER 19, 2023

It looks like we succeeded, and I’m happy to announce that Percona Distribution for PostgreSQL 16 is now available! The effort has definitely paid off, as we can release shortly after upstream. To highlight some: Logical replication from standby servers is now supported natively by PostgreSQL.

Availability 130

Availability Open Source Database Servers 130

Dynatrace

NOVEMBER 24, 2021

All of this convenient visibility is available with just a few clicks. This helps significantly in automatically answering complex questions such as “ Is the CPU saturation of my F5 device caused by any of the virtual servers running on it? Virtual servers. Start monitoring in minutes. Pool nodes. Interfaces.

Network 246

Network Infrastructure Virtualization Metrics 246

Dynatrace

MAY 12, 2022

The title size of a tile has been moved from the dashboard definition to the dashboard metadata definition and included in the advanced settings UI for dashboards. General Availability (Build 1.241.153). General Availability (Build 1.241.153). Dashboards. Dynatrace API. Dynatrace API. Resolved issues. Resolved issues.

Tuning 246

Tuning Metrics Cloud Mobile 246

SQL Performance

MAY 24, 2022

Microsoft recently released the first public preview of SQL Server 2022. This clause is now available in Azure SQL Database and SQL Server 2022, provided you use database compatibility level 160 or higher. For example, the following query is valid since the window name definitions aren’t cyclic: SELECT 'This is valid'.

Servers 145

Servers C++ Code Database 145

Dynatrace

NOVEMBER 2, 2020

IT infrastructure is the heart of your digital business and connects every area – physical and virtual servers, storage, databases, networks, cloud services. This shift requires infrastructure monitoring to ensure all your components work together across applications, operating systems, storage, servers, virtualization, and more.

Infrastructure 246

Infrastructure Monitoring Virtualization Serverless 246

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 117

Servers Database Cache C++ 117

The Netflix TechBlog

JULY 30, 2019

Adoption As of writing this blog, Conductor orchestrates 600+ workflow definitions owned by 50+ teams across Netflix. The task definition parameter rateLimitFrequencyInSeconds sets the duration window, while rateLimitPerFrequency defines the number of tasks that can be scheduled in a duration window.

Lambda 191

Lambda Media Open Source Metrics 191

Dynatrace

MAY 17, 2023

When software runs in a monolithic stack on on-site servers, observability is manageable enough. OpenTelemetry demo application: Distributed host/URL availability checker For our demo, we picked a web-based application whose core service is a distributed host/URL availability check.

Metrics 245

Metrics Open Source Traffic Cache 245

The Netflix TechBlog

SEPTEMBER 18, 2024

Central to this infrastructure is our use of multiple online distributed databases such as Apache Cassandra , a NoSQL database known for its high availability and scalability. While many databases offer server-side compression, handling compression on the client side reduces expensive server CPU usage, network bandwidth, and disk I/O.

Latency 260

Latency Storage Cache Servers 260

CSS Wizardry

DECEMBER 9, 2023

Always force HTTPS when it’s available. Connection overhead isn’t huge , but too many preconnect s that either a) aren’t critical, or b) don’t get used at all, is definitely wasteful. Further, opening and persisting connections has a CPU overhead on both the client and the server. Note that the BBC use schemeless URLs (i.e.

Speed 286

Speed Network Analytics Availability 286

The Netflix TechBlog

FEBRUARY 3, 2021

Instead, the schema gets generated at runtime based on definitions in code. Comprehensive documentation is available on the website but let’s walk through an example to show you how easy it is to use this framework. link] Full documentation for the framework is available on the DGS Framework github repository.

Open Source 246

Open Source Java Architecture Metrics 246

Dynatrace

NOVEMBER 3, 2021

Monitoring , by textbook definition, is the process of collecting, analyzing, and using information to track a program’s progress toward reaching its objectives and to guide management decisions. At the same time, metrics on a dashboard are showing resource exhaustion issues, such as lack of available memory.

Monitoring 264

Monitoring Metrics DevOps Scalability 264

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

Dynatrace

FEBRUARY 16, 2023

There are many definitions of environmental sustainability, most of which converge on a common theme: collectively and individually, we have a responsibility to act to protect global ecosystems and support health and wellbeing, now and in the future. Average cloud server idle time exceeds 70%.

Energy 260

Energy Airlines Transportation Analytics 260

Dynatrace

APRIL 21, 2022

If you still use the legacy version of Log Monitoring ( Log Monitoring v1 ), the Log Monitoring v1 documentation is still available, but we strongly encourage you to switch to the latest Dynatrace Log Monitoring version and gain direct access to the log content of all your mission-critical processes. General Availability (Build 1.239.178).

Azure 246

Azure Metrics AWS Monitoring 246

The Netflix TechBlog

AUGUST 22, 2019

Once the instance was available, the engineer would use a remote administration tool like RDP to login to the instance to install software and customize settings. The configuration file, referenced scripts, and artifact dependency definitions all live in an internal git repository.

DevOps 210

DevOps AWS Tuning Infrastructure 210

tRPC

MARCH 20, 2025

This has been available since quite early on via the @next tag, but now it's officially released. You can now start executing a procedure on the server in a RSC, pick up the pending promise on the client, and automatically hydrate the React Query cache clientside. You can read more in our Server Components documentation.

Servers 72

Servers Cache Processing Design 72

SQL Performance

AUGUST 2, 2019

I have been making the same recommendations about tempdb since I started working with SQL Server over 15 years ago, when I was working with customers running version 2000. From the customer side, this has been the limit of what can be done*, until SQL Server 2019. I have SQL Server 2019 CTP 3.2 Now that 2019 CTP 3.2

Servers 95

Servers C++ Testing Systems 95

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. At a minimum, we extract all of the type definitions from the GraphQL query and map them to a schema for Elasticsearch to use. The graph has two requirements. Search Indexer.

Database 246

Database Cache Servers Performance 246

Percona

APRIL 4, 2023

Those are a lot more common and may be in your table definitions, so your upgrade process will be harder. If you try to use a reserved word, the server will not explicitly admonish you that you are trying to use a reserved word. Instead, the server informs you that you have a syntax error. Yes, there is a workaround.

Open Source 138

Open Source Database Servers Scalability 138

Dynatrace

JULY 10, 2019

OneAgents are optimized to send data to the Dynatrace servers with the smallest possible impact, querying the metrics every minute, and the data is a first-class citizen for the Dynatrace AI root-cause analysis. Top tip: An easy way to do this is by creating a custom chart and looking for the metric there.

Java 197

Java Best Practices Metrics Azure 197

Scalegrid

JANUARY 20, 2020

It is not available for our in-memory database offerings like hosting for Redis™*. If your application passes on the test dataset, it is definitely fit to deploy in production! Here are the two options we typically suggest: If the analytics job is running on the primary/master server, move it to a secondary/replica server.

Analytics 185

Analytics Database Storage Systems 185

Dynatrace

MAY 28, 2020

Keptn uses SLO definitions to automatically configure Dynatrace or Prometheus alerting rules. If you have a distributed environment with multiple servers hosting your webservers, app servers, and database, I suggest you install the OneAgent on all these servers to get full end-to-end visibility.

Engineering 270

Engineering Performance Metrics Best Practices 270

SQL Performance

JULY 19, 2022

The simplest definition of a log record: it describes a single change to a database. You can read a bit more about rollbacks in my article A Complete Introduction to SQL Server Transactions on the SentryOne blog, and I’ll cover them in depth in the next article. What Are Log Records? Log Record Types.

Servers 94

Servers Database Storage Engineering 94

The Netflix TechBlog

OCTOBER 7, 2021

However, Netflix is available for streaming on thousands of types of devices and it is powered by hundreds of micro-services which are deployed independently, making it extremely challenging to comprehensively test internally. Additionally, this gets us closer to consistent metric definitions in both realtime and offline systems.

Metrics 206

Metrics Mobile Testing Strategy 206

KeyCDN

FEBRUARY 4, 2021

This query is performed by a Domain Name Server (DNS server) or servers nearby that have been assigned responsibility for that hostname. You can think of a DNS server as a phone book for the internet. A DNS server maintains a directory of domain names and translates them to IPs. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

Dynatrace

OCTOBER 23, 2020

The shortest possible time to value offered by Dynatrace is one of the most important reasons that our customers select Dynatrace over other monitoring solutions available on the market. The Ansible OneAgent collection is available from two primary sources: Directly from Dynatrace. Dynatrace news. From the Ansible Galaxy repository.

Tuning 147

Tuning Monitoring Availability Architecture 147

Percona

MARCH 23, 2023

When it comes to enterprise-level databases, there are several options available in the market, but PostgreSQL stands out as one of the most popular and reliable choices. PostgreSQL supports sharding, which allows data to be distributed across multiple servers, making it ideal for high-traffic websites and applications.

Database 139

Database Open Source Traffic Small Business 139

O'Reilly

FEBRUARY 25, 2025

Once I got that demo working on my laptop, my goal was to host it on a few university Linux servers that I had access to. Our university IT folks told me that I wouldnt be able to access the few Linux servers with enough CPUs and RAM needed to run Ollama, so I had to scrap my initial plans for self-hosting.

Code 76

Code Programming Servers Cloud 76

Smashing Magazine

AUGUST 31, 2021

This file is rendered on the server and is not re-rendered on the client. Use it for <Provider> s, global definitions, application settings, and so on. Every time a new route is visited, our pages can tap into the AppStateContext and have their definitions passed down as props. Creating A Hierarchy Amongst Routes.

Cache 106

Cache Servers Code Best Practices 106

All Things Distributed

DECEMBER 1, 2016

Today, we're making available broad new services which that let builders prepare and operate their applications more quickly and efficiently, and respond to changes in both their business and their operating environment, swiftly. We launched the following new services and features today to help.

AWS 136

AWS Development Lambda Open Source 136

Percona

APRIL 4, 2023

” While this is definitely a valid use case, I hadn’t personally come across an issue in the wild where the application fix wasn’t trivial. To quickly set up the environment, ProxySQL was installed locally on the host running pt-archiver and set up with a single backend (the target testbed server).

Open Source 131

Open Source Servers Engineering Scalability 131

Dynatrace

MAY 16, 2019

Dynatrace out-of-the-box metrics generally focus on availability, failure rate, and performance. For this Early Access Program, the new metrics will be available at no charge. Once released, these metrics will be treated just like custom metrics (available through purchase of a Data ingest & Analytics package ).

Metrics 153

Metrics Analytics Programming Database 153

The Netflix TechBlog

JUNE 13, 2023

Migrating Critical Traffic At Scale with No Downtime — Part 2 Shyam Gala , Javier Fernandez-Ivern , Anup Rokkam Pratap , Devang Shah Picture yourself enthralled by the latest episode of your beloved Netflix series, delighting in an uninterrupted, high-definition streaming experience.

Traffic 285

Traffic Metrics Systems Strategy 285