MySQL High Availability Framework Explained – Part II: Semisynchronous Replication


In Part I , we introduced a High Availability (HA) framework for MySQL hosting and discussed various components and their functionality. Semisynchronous replication, which is natively available in MySQL, helps the HA framework to ensure data consistency and redundancy for committed transactions. Let’s discuss some of the key MySQL settings used to ensure optimal behavior for high availability and data consistency in our framework.

Design Patterns: Queue-Based Load Leveling Pattern


Maximizing Availability : Delays or Downtime of the service does not affect the application generating the messages. Control Costs : You don't have to design your service to meet peak load, but rather average load. Modern software usually involves running tasks that invoke services.

Towards federated learning at scale: system design

The Morning Paper

Towards federated learning at scale: system design Bonawitz et al., From the potential tens of thousands of devices announcing availability to the server during a certain time window, the server selects a subset of typically a few hundred which are invited to work on a specific FL task.

Windows Failover Cluster Quorum Modes in SQL Server Always On Availability Groups

SQL Shack

This article gives an overview of Windows Failover Cluster Quorum modes that is necessary for SQL Server Always on Availability Groups. Introduction SQL Server Always On is a flexible design solution to provide high availability (HA) and disaster recovery (DR).

Inspired Design Decisions: Avaunt Magazine

Smashing Magazine

Inspired Design Decisions: Avaunt Magazine. Inspired Design Decisions: Avaunt Magazine. I hate to admit it, but five or six years ago my interest in web design started to wane. Design had lost its joyfulness. Studying the design of Avaunt magazine can teach and inspire.

Design Patterns: Cache-Aside Pattern


This post is part of a Design Patterns series. If the data fits into the available cache space, prime the cache with the data on startup and apply a policy that prevents the data from expiring.

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Inspired Design Decisions: Alexey Brodovitch

Smashing Magazine

Inspired Design Decisions: Alexey Brodovitch. Inspired Design Decisions: Alexey Brodovitch. Before writing Art Direction for the Web , I began to study Alexey Brodovitch when I became fascinated by editorial and magazine design. Inspired Design Decisions: Avaunt Magazine.

Design Patterns: Competing Consumer Pattern


Building on the Queue-Based Load Leveling Pattern , the Competing Consumer Pattern enables a system to process multiple messages concurrently to optimize throughput, to improve scalability and availability, and to balance the workload.

Designing far memory data structures: think outside the box

The Morning Paper

Designing far memory data structures: think outside the box Aguilera et al., Therefore, if we want to make full use of one-sided far memory, we need to think carefully about the design of our data structures to make that access efficient.

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Modelling Bounded Contexts with the Bounded Context Design Canvas: A Workshop Recipe

Strategic Tech

In Domain-Driven Design, a large system is decomposed into bounded contexts , which become natural boundaries in code as microservices and as teams in the organisation. 30 minutes) Bounded Context Design Canvas (min. This guides you into exploring alternative design opportunities.

Designing For Micro-Moments

Smashing Magazine

Designing For Micro-Moments. Designing For Micro-Moments. A couple of years ago, Google announced a new mobile-first initiative it wanted web designers and marketers to pick up on. As such, it’s your job to know how to specifically design for these micro-moments.

Product-aligned vs Capability-aligned Organisation Design

Strategic Tech

There are broadly two dominant approaches used to organise teams in modern organisations that have moved beyond traditional activity-oriented organisation design (organising people by their specific skill). organization-design digital-transformation domain-driven-design

What Web Designers Can Do To Speed Up Mobile Websites

Smashing Magazine

What Web Designers Can Do To Speed Up Mobile Websites. What Web Designers Can Do To Speed Up Mobile Websites. I recently wrote a blog post for a web designer client about page speed and why it matters. What Web Designers Can Do To Optimize Mobile Sites For Speed.

Design Patterns: Series Introduction


I have decided to write a series on some common and modern Design Patterns that are useful in today's horizontally scalable (such as cloud-hosted) applications. This is not going to be the usual, gang of four design patterns series, but rather more suited towards building a modern application architecture that caters for the increasing requirements for east-west communication and easily scaling up and deploying. Design Patterns Software Development Software Architecture

Inspired Design Decisions: Bea Feitler, An Unstoppable Creative Force

Smashing Magazine

Inspired Design Decisions: Bea Feitler, An Unstoppable Creative Force. Inspired Design Decisions: Bea Feitler, An Unstoppable Creative Force. Even if you didn’t study graphic design at art school, you might know a few famous names. Previously On “Inspired Design Decisions”.

2019 Database Trends – SQL vs. NoSQL, Top Databases, Single vs. Multiple Database Use


While MongoDB is often considered an alternative to MySQL, the two databases do work well together when properly designed. The more memory you have available, the better your database should perform. Wondering which databases are trending in 2019?

Intro to Redis Cluster Sharding – Advantages, Limitations, Deploying & Client Connections


Redis Cluster is the native sharding implementation available within Redis that allows you to automatically distribute your data across multiple nodes without having to rely on external tools and utilities. High Availability.

PyMongo Tutorial: Testing MongoDB Failover in Your Python App


When deploying in production, it’s highly recommended to setup in a MongoDB replica set configuration so your data is geographically distributed for high availability. Although most MongoDB drivers try to abstract this event, developers should understand and design their applications for such behavior, as applications should expect transient network errors and retry before percolating errors up.

Bringing Rich Experiences to Memory-constrained TV Devices

The Netflix TechBlog

The goal of this experience from a UX design perspective was to bring together a tightly-related set of original titles that, though distinct entities on their own, also share a connected universe. front-end-development user-interface-design netflix graphics javascript-development

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Spice up your Analytics: Amazon QuickSight Now Generally Available in N. Virginia, Oregon, and Ireland.

All Things Distributed

Today, I am very happy to announce that QuickSight is now generally available in the N. Put simply, data is not always readily available and accessible to organizational end users. I’m excited that QuickSight is now generally available in N.

IE10 Snap Mode and Responsive Design

Tim Kadlec

Early versions of Chrome and Firefox are both available for Metro and using the typical meta viewport element is enough to ensure layouts adjust while in snap mode. Maximiliano Firtman has done an excellent job providing an overview of what to expect from IE10 in Windows 8 , but I wanted to dig just a little deeper on one feature in particular. In Windows 8, there are two “modes” of use: Metro mode and classic mode.

Amazon Aurora ascendant: How we designed a cloud-native relational database

All Things Distributed

Aurora's design preserves the core transactional consistency strengths of relational databases. Customers love this because Aurora provides the performance and availability of commercial grade databases at 1/10th the cost. Relational databases have been around for a long time.

Self-Host Your Static Assets

CSS Wizardry

We cannot cross-reference any of the priorities within these connections, so we lose the ability to deliver assets in a considered and well designed manner. That said, this isn’t always the case, and by self-hosting your assets you can design much more bespoke caching strategies.

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Amazon Redshift and Designing for Resilience - All Things Distributed

All Things Distributed

Amazon Redshift and Designing for Resilience. s now available for all customers in the US East (N. Your data is also automatically replicated to Amazon S3 which is designed for 99.99999999% durability. m excited that Amazon Redshift is now available to everyone.

Document Model Support in DynamoDB: Flexibility, Availability, Performance, and Scale.Together at last

All Things Distributed

We designed DynamoDB to operate with at least 99.999% availability. We started with Amazon Dynamo, a simple key-value store that was built to be highly available and scalable to power various mission-critical applications in Amazon’s e-commerce platform. These databases trade off complex querying capabilities and consistency for scale and availability. These features are now available in four of our AWS Regions, and will be available in the remaining regions shortly.

Amazon Redshift and Designing for Security - All Things Distributed

All Things Distributed

Amazon Redshift and Designing for Security. How do you handle availability, security, and integration?â?? ve talked about performance and availability in Amazon Redshift before. All Things Distributed. Werner Vogels weblog on building scalable and robust distributed systems.

Microsoft Introduces Azure Front Door, a Scalable Service for Protecting Web Applications


In a recent blog post, Microsoft introduced the general availability (GA) of Azure Front Door (AFD), a scalable and secure entry point for web applications. Cloud Performance & Scalability CDN Azure Microsoft Azure Cloud Security Edge DDoS Architecture & Design DevOps news

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The Challenges and Traps of Architecting Sociotechnical Systems

Strategic Tech

Decoupling Streams of Work Our goal when designing systems is to maximise the speed of delivery and value of the work we deliver. If we design our capabilities naively and too fine-grained, global complexity will be greater.

Application Performance Review Process


The performance characteristics of the application are determined by its architecture and design. Applications must be architected and designed with sound principles and best practices. Overview.

Amazon DynamoDB ? a Fast and Scalable NoSQL Database.

All Things Distributed

a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications. Today is a very exciting day as we release Amazon DynamoDB , a fast, highly reliable and cost-effective NoSQL database service designed for internet scale applications. The original Dynamo design was based on a core set of strong distributed systems principles resulting in an ultra-scalable and highly reliable database system. Durable and Highly Available. All Things Distributed.

Snowflake Performance Tuning: Top 5 Best Practices


How do you tune the Snowflake data warehouse when there are no indexes, and few options available to tune the database itself? Snowflake was designed for simplicity, with few performance tuning options.

Making Cloud.typography Fast(er)

CSS Wizardry

There was no appetite from them to do so, so I decided to make it all available for free anyway—a faster web benefits everyone. a year worth of customers currently bound to a slow-by-design, slow-by-default webfont solution that we could have helped out!

Building and Scaling Data Lineage at Netflix to Improve Data Infrastructure Reliability, and…

The Netflix TechBlog

You are designing a learning system to forecast Service Level Agreement (SLA) violations and would want to factor in all upstream dependencies and corresponding historical states. Design a flexible data model ? —?Represent

14 Best Performance Testing Tools and APM Solutions


With All of the Free and Enterprise Tools Available for Performance Testing, There’s No Excuse for Having a System Failure. That could be one way to run a load test… Or, you can use a tool specifically designed to simulate that kind of load and much more!

Expanding the Cloud - New AWS Region: US-West (Northern.

All Things Distributed

We have expanded the AWS footprint in the US and starting today a new AWS Region is available for use: US-West (Northern California). This new Region consists of multiple Availability Zones and provides low-latency access to the AWS services from for example the Bay Area.

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Build automated self-healing systems with xMatters and Dynatrace (Part 1 of 3)


Flow Designer for more consistency in the delivery cycle. At this year’s Google Cloud Next conference, xMatters introduced Flow Designer , a visual designer that enables users to resolve issues without writing a single line of code. Flow Designer then connects the tools for you. Whether you’re rolling back a release or applying a hotfix, Flow Designer increases speed and creates consistency in the delivery cycle. Dynatrace news.

Reimagining Experimentation Analysis at Netflix

The Netflix TechBlog

Rendering Visualizations with Plotly Democratization across 3 tracks: Metrics, Stats, Viz The new architecture employs a modular design that permits data scientists to contribute using SQL, Python, and R, the tools of their trade.

Tips for Technical Interviews

CSS Wizardry

They’re relatively senior, but the fact that design gets a representation means that it won’t be a full-on engineering onslaught. Familiarise yourself with the product in question, and brush up as much as possible or necessary on design fundamentals so as to be as least semi-conversant (e.g. Why Is This Position Available? We’re adding two new engineers, and designer, and a dedicated product owner this quarter then you’re onto good news!

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Java Or Scala Performance – Which One Is Better?

Alex Podelko

It is designed to run in specific environments, like Java Virtual Machine for instance. This means that in the beginning, it was designed like most conventional programming languages from that era. Scala was designed from the very beginning to be a functional programming language.

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CSS and Network Performance

CSS Wizardry

console.log("I will not run until slow-loading-stylesheet.css is downloaded."); This is by design. Despite having been called CSS Wizardry for over a decade now, there hasn’t been a great deal of CSS-related content on this site for a while.

Lerner?—?using RL agents for test case scheduling

The Netflix TechBlog

The device ecosystem is rich with partners ranging from Silicon-on-Chip (SoC) manufacturers, Original Design Manufacturer (ODM) and Original Equipment Manufacturer (OEM) vendors. We wanted the to tool be available as a standalone library as well as scalable API service. Lerner?—?using

How It Works: SQL Server Lock Partitioning

SQL Server According to Bob

The lock manager (LockMgr) is designed to track partitioned and non-partitioned locks. The partitioned memory and latch objects protect in-memory structures for short durations and can be sized according to available memory for SQL Server.

Engineering a Studio Quality Experience With High-Quality Audio at Netflix

The Netflix TechBlog

Adaptive streaming is a technology designed to deliver media to the user in the most optimal way for their network connection. The top graph shows both the audio and video bitrate, along with the available network throughput.