Scalegrid

AUGUST 22, 2019

In the final post of this series, we will review the last solution, Patroni by Zalando, and compare all three at the end so you can determine which high availability framework is best for your PostgreSQL hosting deployment. Managing High Availability in PostgreSQL – Part I: PostgreSQL Automatic Failover. Standby Server Tests.

Availability 277

Availability Servers Network Testing 277

DZone

MARCH 14, 2023

As an engineer, you probably know that server performance under heavy load is crucial for maintaining the availability and responsiveness of your services. But what happens when traffic bursts overwhelm your system? Queueing requests is a common solution, but what's the best approach: FIFO or LIFO?

Strategy 147

Strategy Latency Availability Traffic 147

Percona

JUNE 22, 2023

To make data count and to ensure cloud computing is unabated, companies and organizations must have highly available databases. This guide provides an overview of what high availability means, the components involved, how to measure high availability, and how to achieve it.

Availability 113

Availability Database Open Source Hardware 113

Dynatrace

JUNE 25, 2020

Dynatrace Managed is intrinsically highly available as it stores three copies of all events, user sessions, and metrics across its cluster nodes. Our Premium High Availability comes with the following features: Active-active deployment model for optimum hardware utilization. Minimized cross-data center network traffic.

Availability 256

Availability Hardware Latency Traffic 256

Percona

DECEMBER 21, 2023

Being software composed of different, multiple technologies can add complexity to a well-known concept: High Availability (HA). As you can see, stats are available via the port 8404. And here is the not-so-easy part: One has to deploy at least two PMM instances on at least two different servers AND set up replicas. How to do it?

Availability 107

Availability Monitoring Open Source Traffic 107

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 356

Traffic Latency Cache Metrics 356

Percona

JUNE 12, 2023

When it comes to access to their applications, users demand instant, reliable, and secure interactions — and that means databases must be highly available. With database high availability (HA), services are largely uninterrupted, and end users are largely satisfied. The obvious answer is this: To achieve high availability.

Architecture 102

Architecture Availability Open Source Healthcare 102

Dynatrace

JUNE 5, 2023

The F5 BIG-IP Local Traffic Manager (LTM) is an application delivery controller (ADC) that ensures the availability, security, and optimal performance of network traffic flows. Business-critical applications typically rely on F5 for availability and success. It serves as a crucial component between applications and users.

Traffic 208

Traffic Virtualization Metrics Monitoring 208

DZone

AUGUST 16, 2023

Reduced server load: By serving cached content, the load on the server is reduced, allowing it to handle more requests and improving overall scalability. Cost savings: Caching can reduce the computational resources required for data processing and lower infrastructure costs by minimizing the need for expensive server resources.

Cache 246

Cache Scalability Performance Latency 246

Percona

JULY 7, 2023

With the average cost of unplanned downtime running from $300,000 to $500,000 per hour , businesses are increasingly using high availability (HA) technologies to maximize application uptime. Where a high availability design once worked well, it can no longer keep up with more complex requirements.

Availability 87

Availability Open Source Architecture Database 87

Percona

AUGUST 22, 2023

With so much at stake, database high availability and fault tolerance have become must-have items, but many companies just aren’t certain which one they must have. This blog article will examine shared attributes of high availability (HA) and fault tolerance (FT). What does high availability mean?

Availability 83

Availability Hardware Open Source Database 83

Dynatrace

JULY 2, 2024

The Qualys Threat Research Unit (TRU) has discovered a Remote Unauthenticated Code Execution (RCE) vulnerability in OpenSSH server (sshd) in glibc-based Linux systems. Using the VPC flow log default pattern available in DPL Architect, we can extract the meaningful fields to see only the network traffic targeting the SSH port.

AWS 218

AWS Network Traffic Servers 218

The Netflix TechBlog

AUGUST 16, 2023

It means that if each event loop has a connection pool that connects to every origin (our name for backend) server, there would be a multiplication of event loops by servers by Zuul instances. For example, a 16-core box connecting to an 800-server origin would have 12,800 connections.

Traffic 175

Traffic Servers Google Metrics 175

Dynatrace

JULY 1, 2020

In my last blog , I’ve provided an example of this happening, whereby the traffic spiked and quadrupled the usual incoming traffic. These are all interesting metrics from marketing point of view, and also highly interesting to you as they allow you to engage with the teams that are driving the traffic against your IT-system.

Traffic 264

Traffic Analytics Metrics Servers 264

Dynatrace

MAY 6, 2020

Over the last two month s, w e’ve monito red key sites and applications across industries that have been receiving surges in traffic , including government, health insurance, retail, banking, and media. Readers who share our privacy concerns, please note, all the data we monitor is publicly available. . Monitoring with ?the

Website 228

Website Monitoring Retail Media 228

Dynatrace

JULY 15, 2024

These include traditional on-premises network devices and servers for infrastructure applications like databases, websites, or email. ActiveGate also optimizes traffic volume in your network and serves as a secure relay layer in protected networks and DMZs. Read syslog ingestion documentation with configuration samples.

Infrastructure 232

Infrastructure Network Azure Monitoring 232

The Netflix TechBlog

OCTOBER 8, 2024

However, storing and querying such data presents a unique set of challenges: High Throughput : Managing up to 10 million writes per second while maintaining high availability. Handling Bursty Traffic : Managing significant traffic spikes during high-demand events, such as new content launches or regional failovers.

Latency 236

Latency Storage Traffic Tuning 236

The Netflix TechBlog

OCTOBER 14, 2024

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. Blame The Network The next theory was that the network between the web browser UI (on the laptop) and the JupyterLab server was slow.

Latency 211

Latency Virtualization Traffic Processing 211

The Morning Paper

NOVEMBER 15, 2020

Achieving 100 Gbps intrusion prevention on a single server , Zhao et al., Today’s paper choice is a wonderful example of pushing the state of the art on a single server. When used in prevention mode (IPS), this all has to happen inline over incoming traffic to block any traffic with suspicious signatures. OSDI’20.

Servers 128

Servers Hardware Latency Design 128

Dynatrace

JULY 31, 2024

For example, a good course of action is knowing which impacted servers run mission-critical services and remediating those first. By simulating user interactions and running tests from various locations worldwide, synthetic monitoring provides a comprehensive view of application performance and availability. Before a crisis.

Airlines 189

Airlines Monitoring Healthcare Traffic 189

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 248

Latency Storage Cache Efficiency 248

DZone

JANUARY 28, 2021

HAProxy (High Availability Proxy) is an open source, fast, and reliable solution that provides load balancer and reverse proxy features for TCP- and HTTP-based applications. HAProxy load balancer handles heavy load traffic and reroutes requests seamlessly across multiple servers. HAProxy also supports the following features:

AWS 202

AWS Open Source Traffic Servers 202

Dynatrace

JANUARY 11, 2023

With more organizations taking the multicloud plunge, monitoring cloud infrastructure is critical to ensure all components of the cloud computing stack are available, high-performing, and secure. Website monitoring examines a cloud-hosted website’s processes, traffic, availability, and resource use. Database monitoring.

Cloud 234

Cloud Monitoring Best Practices Infrastructure 234

The Netflix TechBlog

FEBRUARY 18, 2022

To this end, we developed a Rapid Event Notification System (RENO) to support use cases that require server initiated communication with devices in a scalable and extensible manner. We thus assigned a priority to each use case and sharded event traffic by routing to priority-specific queues and the corresponding event processing clusters.

Systems 334

Systems Traffic Architecture Mobile 334

Dynatrace

MAY 31, 2023

Keeping pace with modern digital transformation requires ensuring that applications are responsive, resilient, and always available amid increased complexity. There are now many more applications, tools, and infrastructure variables that impact an application’s performance and availability. availability.

Best Practices 233

Best Practices DevOps Latency Metrics 233

Speed Curve

FEBRUARY 5, 2024

Server-timing headers are a key tool in understanding what's happening within that black box of Time to First Byte (TTFB). Cue server-timing headers Historically, when looking at page speed, we've had the tendency to ignore TTFB when trying to optimize the user experience. I mean, why wouldn't we?

Servers 57

Servers Cache Benchmarking Retail 57

Dynatrace

DECEMBER 9, 2020

Application servers use connection pools to maintain connections with the databases that they communicate with. In addition to being available as metrics in custom charts , you can view these metrics at the process group instance level in the Dynatrace web UI. New extensions enable AI-powered monitoring of connection pool performance.

Traffic 141

Traffic Performance Database Metrics 141

Scalegrid

APRIL 5, 2024

It enhances scalability and manages traffic surges, though it requires specific client support and limits multi-key operations to a single hash slot. It offers automatic data sharding, master-replica configurations for high availability, and a scalable and flexible architecture to maintain consistent performance.

Scalability 130

Scalability Java Efficiency Database 130

Dynatrace

SEPTEMBER 29, 2021

A standard Docker container can run anywhere, on a personal computer (for example, PC, Mac, Linux), in the cloud, on local servers, and even on edge devices. This opens the door to auto-scalable applications, which effortlessly matches the demands of rapidly growing and varying user traffic. What is Docker? Networking.

Open Source 314

Open Source Traffic DevOps Cloud 314

Scalegrid

FEBRUARY 8, 2024

A distributed storage system is foundational in today’s data-driven landscape, ensuring data spread over multiple servers is reliable, accessible, and manageable. These storage nodes collaborate to manage and disseminate the data across numerous servers spanning multiple data centers.

Storage 130

Storage Systems Big Data Azure 130

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 193

Metrics Open Source Traffic Cache 193

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

SEPTEMBER 5, 2024

Native support for Syslog messages Syslog messages are generated by default in Linux and Unix operating systems, security devices, network devices, and applications such as web servers and databases. It also enhances syslog messages with additional context and optimizes network traffic, improving overall system resilience and security.

Innovation 273

Innovation AWS Analytics Storage 273

Dynatrace

SEPTEMBER 30, 2021

Cloud migration is the process of transferring some or all your data, software, and operations to a cloud-based computing environment that offers unlimited scale and high availability. In case of a spike in traffic, you can automatically spin up more resources, often in a matter of seconds. Improved performance and availability.

Cloud 175

Cloud Traffic Best Practices Hardware 175

Dynatrace

DECEMBER 9, 2020

Let’s consider the business challenges of an online shop that is powered by a microservice architecture where several instances of each microservice run, including the shopping cart service, to ensure the highest possible availability. With Dynatrace OneAgent you also benefit from support for traffic routing and traffic control.

Java 245

Java Traffic Architecture Serverless 245

Scalegrid

MARCH 28, 2024

Introduction Caching serves a dual purpose in web development – speeding up client requests and reducing server load. Redis Revealed: An Overview Redis, a renowned open-source, in-memory remote dictionary server, stands out for its diverse data structures and advanced features. Data transfer technology.

Cache 130

Cache Storage Architecture Scalability 130

Percona

JUNE 22, 2023

As a MySQL database administrator, keeping a close eye on the performance of your MySQL server is crucial to ensure optimal database operations. However, simply deploying a monitoring tool is not enough; you need to know which Key Performance Indicators (KPIs) to monitor to gain insights into your MySQL server’s health and performance.

Performance 109

Performance Monitoring Traffic Database 109