The Netflix TechBlog

OCTOBER 14, 2024

This document details the intriguing process of debugging this issue, all the way from the UI down to the Linux kernel. the ipykernel process) of the jupyter-lab server process , which means the main event loop being injected by pystan is that of the ipykernel process, not the jupyter-server process.

Latency 217

Latency Virtualization Traffic Processing 217

Dynatrace

JANUARY 19, 2020

As of today, the SAP ABAP application server remains the central component of the SAP ERP solution. The ABAP platform monitoring solution is based on the remote monitoring approach and so relies on a Dynatrace ActiveGate extension: No agent installation on SAP servers is required. Why SAP ABAP platform monitoring in Dynatrace?

Monitoring 156

Monitoring Best Practices Infrastructure Servers 156

Dynatrace

MAY 31, 2019

As of today, the SAP ABAP application server remains the central component of the SAP ERP solution. The ABAP platform monitoring solution is based on the remote monitoring approach and so relies on a Dynatrace ActiveGate extension: No agent installation on SAP servers is required. Why SAP ABAP platform monitoring in Dynatrace?

Monitoring 161

Monitoring Best Practices Programming Infrastructure 161

Dynatrace

JULY 29, 2021

Compression of data that’s older than three days utilizes one virtual CPU. You can expect to see a slight increase in CPU usage (by a few percentage points) of one virtual CPU until the compression of the existing data is complete. The screenshot below shows CPU usage on the same server (a 32-core machine).

Storage 211

Storage Virtualization Infrastructure Availability 211

Dynatrace

MAY 28, 2020

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. This will enable deep monitoring of those Java,NET, Node, processes as well as your web servers.

Engineering 200

Engineering Performance Metrics Best Practices 200

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

Scalegrid

MAY 11, 2024

The default storage engine in earlier versions was MMAPv1, which utilized memory-mapped files and document-level locking. However, it is limited by the available free memory amount, and all data is lost when the server stops. However, due to its reliance on the virtual memory subsystem, it is not suitable for larger datasets.

Storage 130

Storage Engineering Cache Database 130

Dynatrace

APRIL 29, 2021

Many Site Reliability Engineers could do without the frustrations of managing virtual or bare-metal compute nodes. A blended EC2 + Fargate approach, as well as a pure Fargate approach, are documented in Dynatrace Help. Dynatrace news. Choosing the best approach depends on the context of your team.

AWS 147

AWS Serverless Java Virtualization 147

Scalegrid

AUGUST 30, 2024

Authentication Mechanisms in RabbitMQ RabbitMQ provides several authentication mechanisms to ensure the security of user-server connections, such as using a combination of username and password or employing X.509 When an authentication attempt fails in RabbitMQ, it terminates connections, and error messages are recorded in server logs.

Transportation 130

Transportation Virtualization Strategy Storage 130

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. For examples of writing Custom devices, take a look at our document or take inspiration from our GitHub repository.

Java 144

Java Best Practices Metrics Azure 144

Dynatrace

AUGUST 24, 2020

Dynatrace VMware and virtualization documentation . Dynatrace Kubernetes documentation . Dynatrace OneAgent documentation . Dynatrace root cause analysis documentation . Similar ly, integrations for Azure and VMware are available to help you monitor your infrastructure both in the cloud and on-premises.

Analytics 136

Analytics Infrastructure AWS Operating System 136

Dynatrace

OCTOBER 20, 2020

For full details, see the Azure documentation. . You can also track how many requests each slot serves and quickly see if there are any client- or server-side HTTP errors. In the screenshot below you can see that there were many more server errors (5xx) when the slots were swapped at around 14:05. How to get started .

Azure 133

Azure Cloud Traffic Metrics 133

Percona

MARCH 13, 2023

There is a section in our Documentation ( Introduction to Serverless PostgreSQL ) and a short overview of the primary components: Page Server The storage server with the primary goal of storing all data pages and WAL records Safe Keeper A component to store WAL records in memory (to reduce latency). 50051 2.

Serverless 123

Serverless C++ Storage Servers 123

KeyCDN

JANUARY 14, 2021

What makes React unique is that it can be rendered either server or client side. Depending on data security requirements, specific components may be rendered on the server while others are rendered on the client. The learning curve for this framework is high, partially due to inconsistent project documentation.

Google 135

Google Mobile Open Source Website 135

Smashing Magazine

AUGUST 28, 2020

According to the official documentation, Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. First, create a virtual environment, named djangodev. Now to get into your virtual environment, you need to get it activated; source ~/.virtualenvs/djangodev/bin/activate.

Virtualization 143

Virtualization Database Code Processing 143

Brendan Gregg

JANUARY 1, 2019

eBPF should stand for something meaningful, like Virtual Kernel Instruction Set (VKIS), but due to its origins it is extended Berkeley Packet Filter. Some of these have plenty of free documentation online, like for tracing, and others not yet. Perhaps you'd like a new year's resolution: learn eBPF! eBPF is part of the Linux kernel.

C++ 99

C++ Virtualization Programming Code 99

Dynatrace

AUGUST 5, 2019

Lift & Shift is where you basically just move physical or virtual hosts to the cloud – essentially you just run your host on somebody else’s hardware. The following shows one of the slides I use to answer the question: What happens if I move this group of servers? For that, it is sufficient to only know host-2-host dependencies.

Cloud 31

Cloud Traffic Database Network 31

SQL Performance

NOVEMBER 18, 2019

Migrating an on-premises SQL Server instance to an Azure Virtual Machine (VM) is a common method to migrate to Azure. Microsoft has helped simplify things by creating multiple types of virtual machines. Compute optimized – High CPU-to-memory ration, medium traffic web servers and application servers. Generation.

Azure 76

Azure Benchmarking Storage Virtualization 76

HammerDB

APRIL 27, 2021

In this example we are using SQL Server so the message shows that everything is in order and we can proceed with running tests. If the library failed to load consult the HammerDB documentation on installing and configuring your libraries with the PATH environment variable for Windows or LIBRARY_PATH environment for Linux. print dict.

Virtualization 74

Virtualization Benchmarking Database Operating System 74

All Things Distributed

JANUARY 18, 2012

Behind the scenes, Amazon DynamoDB automatically spreads the data and traffic for a table over a sufficient number of servers to meet the request capacity specified by the customer. After the successful launch of the first Dynamo system, we documented our experiences in a paper so others could benefit from them.

Scalability 164

Scalability Database Ecommerce Latency 164

Percona

JUNE 22, 2023

Load balancing : Requests are evenly distributed across multiple database servers, ensuring the system remains operational even if one server fails. Automated failover : To keep the database operational and minimize downtime, it automatically switches to a backup server if the primary server fails.

Availability 114

Availability Database Open Source Hardware 114

SQL Performance

JUNE 21, 2019

I've been teaching and writing about common SQL Server mistakes for many years. This article will expand on my previous article and point out how these apply to SQL Server , Azure SQL Database , and Azure SQL Managed Instance. SQL Server Agent alerts. This situation applies to on-premises SQL Server and IaaS. Statistics.

Servers 49

Servers Azure Hardware Database 49

Dynatrace

OCTOBER 17, 2019

We’re no longer living in an age where large companies require only physical servers, with similar and rarely changing configurations, that could be manually maintained in a single Datacenter. with more being added continually.

Code 112

Code Infrastructure DevOps Cloud 112

Abhishek Tiwari

JANUARY 6, 2018

auto-completion of commands, auto-suggestions, in-line documentation. Ark comes with an in-cluster service (Ark server) and CLI (Ark client). Ark server performs the actual backup, validates it and loads backup files in cloud object storage. Kube-shell is an integrated shell for working with the Kubernetes CLI. Related tools.

Open Source 111

Open Source DevOps Engineering Storage 111

CSS - Tricks

DECEMBER 23, 2020

The full documentation covers it all. When the Lighthouse CI is run, it will start a server that’s able to run the tests accordingly. Once the test finishes, the server will automatically shut dow. This URL should be serveable by the custom server that you specified. boolean] --config Path to JSON config file.

Performance 79

Performance Storage Servers Virtualization 79

Percona

SEPTEMBER 6, 2023

Definitions The examples below use MySQL, but it is helpful to check their competition’s documentation to help explain what a functional index is. Well, there is always a drawback to having the server do something complicated for you. You may also hear this type of index being called Index on expression.

Speed 88

Speed Virtualization Storage Open Source 88

Brendan Gregg

SEPTEMBER 5, 2017

There's a lot about Linux containers that isn't well documented yet, especially since it's a moving target. Here are some documents for understanding internals: - Linux Namespaces from Wikipedia - Linux Cgroups from Wikipedia - Documentation/cgroup-v1 from the Linux source - Documentation/cgroup-v2.txt

Virtualization 75

Virtualization AWS Engineering Hardware 75

KeyCDN

MARCH 28, 2019

Features Simple and fast routing engine Comes with its own CLI Powerful template system (Blade) Good documentation CakePHP CakePHP is one of the first PHP frameworks to be released back in 2005. Many popular server-side and full stack frameworks use Express such as Feathers, KeystoneJS, MEAN, Sails, and more.

Programming 77

Programming Website Scalability Design 77

Randon ASCII

JULY 11, 2022

This slowdown may be mitigated in Windows 11 but in the latest Windows Server editions – where it matters most – this bug is alive and well. I’d been testing on a virtual machine in a data center that I had access to, purely because this machine has an internet connection that runs at over 2 Gbps. Server versions should be fine….

Cache 105

Cache Energy Processing Google 105

Smashing Magazine

OCTOBER 22, 2021

The idea is simple : players steer virtual toy cars in a top-down arena that resembles a foosball table. Clearly, the “first client rules all” approach needed to be replaced with a solution in which the game state lives on the server. The first team to score 10 goals wins. Project Setup. Creating A Schema.

Games 98

Games Servers Database Virtualization 98

SQL Server According to Bob

JUNE 9, 2016

SQL Server, as outlined in the following post ( [link] ) adjusts to various processor configurations. I have received questions related to how SQL Server accomplishes the alignment on both bare metal and VM installations. For Virtual Machine (VM) installations you may need to consult the VM documentation for support capabilities.

Servers 40

Servers Virtualization Tuning Architecture 40

Percona

APRIL 12, 2023

Whereas many open source software offerings — like the community version of MySQL — use the GNU General Public License ( GPL ), MongoDB has been under the GNU Affero General Public License ( AGPL ) and more recently under the Server Side Public License ( SSPL ), introduced by MongoDB itself. Is MongoDB free to use?

Open Source 86

Open Source Programming Database Servers 86

HammerDB

FEBRUARY 25, 2021

To benchmark a database we introduce the concept of a Virtual User. When we have multiple CPU cores on both the benchmark client and database server it is crucial that these database sessions run independently of each other at the same time, in parallel. The following is an example from TPROC-C from SQL Server. select top 100.

Programming 68

Programming Benchmarking Virtualization C++ 68

Percona

JULY 7, 2023

HA in PostgreSQL databases delivers virtually continuous availability, fault tolerance, and disaster recovery. In general terms, to achieve HA in PostgreSQL, there must be: Redundancy: To ensure data redundancy and provide continuous performance when a primary server fails, multiple copies of the database reside in replica servers.

Availability 88

Availability Open Source Architecture Database 88

Scalegrid

JUNE 28, 2024

This powerful message broker reliably delivers messages to their proper recipients while affording a wide range of routing options, highlighting its versatility – see official documentation. RabbitMQ demonstrates considerable flexibility through its compatibility with multiple messaging protocols.

IoT 130

IoT Healthcare Programming Open Source 130

HammerDB

DECEMBER 3, 2024

We will look at some initial TPROC-C tests with SQL Server 2022 and Windows 11 with what we learned from the configuration. We can now run a test for a longer duration with the system exhibiting stability at 2M SQL Server TPM and a highly respectable throughput of 800K+ NOPM for a desktop environment.

Performance 52

Performance Hardware Virtualization Benchmarking 52

Enprowess

SEPTEMBER 7, 2021

Software Developers got to use JavaScript CLI tools to create the back-end part of web applications or server-side. allows creating web application’s server-side or back-end components. is a server-side, open-source, JavaScript runtime environment that allows developers to write JavaScript on the client and the server-side.

Open Source 52

Open Source Virtualization Programming Servers 52