Chaos Mesh — A Solution for System Resiliency on Kubernetes

DZone

Traditionally we use unit tests and integration tests that guarantee a system is production-ready. To better identify system vulnerabilities and improve resilience, Netflix invented Chaos Monkey , which injects various types of faults into the infrastructure and business systems. security performance kubernates distributed system chaos engineering scalableWhy Chaos Mesh?

It’s time to upgrade the PTC System Monitor (PSM)!

Dynatrace

As a PSM system administrator, you’ve relied on AppMon as a preconfigured APM tool for detecting, diagnosing, and repairing problems that impact the operational health of your Windchill application suite. The post It’s time to upgrade the PTC System Monitor (PSM)!

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Application Scalability — How To Do Efficient Scaling

DZone

In this article, we explain why you should pay attention to when building a scalable application. What Is Application Scalability? Application scalability is the potential of an application to grow in time, being able to efficiently handle more and more requests per minute (RPM). It’s not just a simple tweak you can turn on/off; it’s a long-time process that touches almost every single item in your stack, including both hardware and software sides of the system.

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

High Scalability

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. At ScaleGrid, we recently added support for Redis Clusters on our platform through our fully managed Redis hosting plans.

Ensuring Performance, Efficiency, and Scalability of Digital Transformation

Alex Podelko

Computing System Congestion Management Using Exponential Smoothing Forecasting by James Brady, State of Nevada. – System performance management is an important topic – and James is going to share a practical method for it. System Performance Estimation, Evaluation, and Decision (SPEED) by Kingsum Chow, Yingying Wen, Alibaba. Cloud Events Performance Performance Engineering Capacity CMG Conference Scalability

Benchmarking spreadsheet systems

The Morning Paper

Benchmarking spreadsheet systems Rahman et al., With increasing data sizes… spreadsheets have started to break down to the point of being unusable, displaying a number of scalability problems. They often freeze during computation, and are unable to import datasets well below the size limits posed by current spreadsheet systems. The other systems avoid this recomputation, but are slower than Excel for value-only datasets.

Wireless attacks on aircraft instrument landing systems

The Morning Paper

Wireless attacks on aircraft instrument landing systems Sathaye et al., Today’s paper is a good reminder of just how important it is becoming to consider cyber threat models in what are primary physical systems, especially if you happen to be flying on an aeroplane – which I am right now as I write this! The first fully operational Instrument Landing System (ILS) for planes was deployed in 1932. USENIX Security Symposium 2019.

Scalable MicroService Architecture

VoltDB

As the complexity of applications and systems increases, the size of the teams that work on these also increase. In these scenarios, having the system as a monolithic one inhibits the development team from being able to move forward at speed. With the stored procedures framework, and the in-memory data storage engine, VoltDB drives most complex business logic in the lowest latency in a scalable manner, even in a virtualized environment like VMs and containers.

Scalable MicroService Architecture

VoltDB

As the complexity of applications and systems increases, the size of the teams that work on these also increase. In these scenarios, having the system as a monolithic one inhibits the development team from being able to move forward at speed. With the stored procedures framework, and the in-memory data storage engine, VoltDB drives most complex business logic in the lowest latency in a scalable manner, even in a virtualized environment like VMs and containers.

Stuff The Internet Says On Scalability For March 8th, 2019

High Scalability

There was already a payment system — it was called the credit card. Don't miss all that the Internet has to say on Scalability, click below and become eventually consistent with all scalability knowledge (which means this post has many more items to read so please keep on reading). Wake up! It's HighScalability time: A highly simplified diagram of serverless. ( @jbesw ). Do you like this sort of Stuff? I'd greatly appreciate your support on Patreon.

2019 PostgreSQL Trends Report: Private vs. Public Cloud, Migrations, Database Combinations & Top Reasons Used

High Scalability

PostgreSQL is an open source object-relational database system that has soared in popularity over the past 30 years from its active, loyal, and growing community. For the 2nd year in a row, PostgreSQL has kept the title of #1 fastest growing database in the world according to the DBMS of the Year report by the experts at DB-Engines. So what makes PostgreSQL so special, and how is it being used today?

Stuff The Internet Says On Scalability For March 22nd, 2019

High Scalability

adriancolyer : "eRPC (efficient RPC) is a new general-purpose remote procedure call (RPC) library that offers performance comparable to specialized systems, while running on commodity CPUs in traditional datacenter networks based on either lossy Ethernet or lossless fabrics… We port a production grade implementation of Raft state machine replication to eRPC without modifying the core Raft source code. Wake up! It's HighScalability time: Van Gogh? Nope.

Stuff The Internet Says On Scalability For December 21st, 2018

High Scalability

It's HighScalability time: Have a very scalable Xmas everyone! odrotbohm : I’ve seen microservice based systems more deranged after 2 years than any 1,5 decades old monolith could ever have been. Jeremy Daly : Compared to building and maintaining your own systems, cloud computing is ridiculously inexpensive, especially when you’re starting out and haven’t achieved significant scale. Wake up! See you in the New Year. Do you like this sort of Stuff?

Teaching rigorous distributed systems with efficient model checking

The Morning Paper

Teaching rigorous distributed systems with efficient model checking Michael et al., It describes the labs environment, DSLabs , developed at the University of Washington to accompany a course in distributed systems. During the ten week course, students implement four different assignments: an exactly-once RPC protocol; a primary-backup system; Paxos; and a scalable, transactional key-value storage system. A visual debugger/system explorer.

Performance Vs Scalability

Professor Beekums

One thing that tripped me up early on in my career was the difference between performance and scalability. I was quite surprised when my first project to scale a system actually made my code run slower… in my dev environment at least. Scalability is being able to handle large amounts of users/data/traffic. At first I thought they were exactly the same.

Scalability: strong and weak scaling

PDC

In such scenarios, scalability or scaling is widely used to indicate the ability of hardware and software to deliver greater computational power when the amount of resources is increased. For HPC clusters, it is important that they are scalable, in other words that the capacity of the whole system can be proportionally increased by adding more hardware. In this post we focus on software scalability and discuss two common types of scaling.

Stuff The Internet Says On Scalability For September 7th, 2018

High Scalability

This makes it easy to reason about complex distributed system. Since switching between goroutines doesn't require an actual kernel context switch (or even a system call), this isn't too surprising. For comparison, Google's fibers use a new Linux system call that can switch between two tasks in about the same time, including the kernel time. Hey, it's HighScalability time: Get antsy waiting 60 seconds for a shot?

Stuff The Internet Says On Scalability For November 2nd, 2018

High Scalability

” David Rosenthal : The big successes in the field haven't come from consensus building around a roadmap, they have come from idiosyncratic individuals such as Brewster Kahle, Roberto di Cosmo and Jason Scott identifying a need and building a system to address it no matter what "the community" thinks. Simon Wistow : Observability goes beyond monitoring, enabling the proactive introspection of distributed systems for greater operational visibility. Wake up!

Stuff The Internet Says On Scalability For September 21st, 2018

High Scalability

Too often, those who already hold power, those who are least able to recognize the flaws in our current systems, are the ones who decide our technological future. Don't miss all that the Internet has to say on Scalability, click below and become eventually consistent with all scalability knowledge (which means this post has many more items to read so please keep on reading). Wake up!

Stuff The Internet Says On Scalability For October 19th, 2018

High Scalability

cpeterso : Your quote reminds me of cybernetics' Law of Requisite Variety: "If a system is to be stable, the number of states of its control mechanism must be greater than or equal to the number of states in the system being controlled.". As with all software systems, there are a number of competing constraints that have been weighed that have led to compromises. Hey, wake up! It's HighScalability time: Now that's a cloud!

Stuff The Internet Says On Scalability For July 13th, 2018

High Scalability

billion : venture investment first half of 2018; 1 billion : Utah voting system per day hack attempts; 67% : did not deploy a serverless app last year; $1.8 Memory Guy : Conventional wisdom holds that SSDs will someday displace all HDDs, but in reality SSDs are proving to be more of a challenge to the DRAM market than to the HDD market.So, if you have a fixed budget, SSDs can help you get the most out of your system and are a better alternative than additional DRAM.

Architecting App Logic for Scalability, Reuse, and Agility

DZone

App Logic for transactional systems enforces critical integrity for database web/mobile apps. It's a significant part of the system — nearly half. Architect your app logic! rest api business rules app dev architecture & design business agility integration architecture

Mobile 100

Stuff The Internet Says On Scalability For July 20th, 2018

High Scalability

The third wing of the architecture piece is the “domain specific system-on-chip.” tef : You can use a message broker to glue systems together, but never use one to cut systems apart. paulddraper : The biggest lesson HN teaches for designing large scale systems is "use a large scale system someone else has already designed". Hey, it's HighScalability time: World History Timeline from 3000BC to 2000AD. Yet we still program with text—in files.

Stuff The Internet Says On Scalability For July 27th, 2018

High Scalability

THANKS Rust team for refining modern concepts into such a practical, elegant system. Denning : These analyses show that the conditions exist at all three levels [chip, system, and adopting community] of the computing ecosystem to sustain exponential growth. Don't miss all that the Internet has to say on Scalability, click below and become eventually consistent with all scalability knowledge (which means this post has many more items to read so please keep on reading).

Stuff The Internet Says On Scalability For June 15th, 2018

High Scalability

1.6x : better deep learning cluster scheduling on k8s; 100,000 : Large-scale Diverse Driving Video Database; 3rd : reddit popularity in the US; 50% : increase in Neural Information Processing System papers, AI bubble? Dave Snowden ~ A key principle of complex design is shift a system to an adjacent possible. The system as a whole orientates through multiple actions. Hey, it's HighScalability time: Scaling fake ratings. A 5 star 10,000 phone Chinese click farm.

Infinitely scalable machine learning with Amazon SageMaker

All Things Distributed

At AWS, we continue to strive to enable builders to build cutting-edge technologies faster in a secure, reliable, and scalable fashion. While building Amazon SageMaker and applying it for large-scale machine learning problems, we realized that scalability is one of the key aspects that we need to focus on. " To make things even more challenging, a system that can handle a single large training job is not nearly good enough if training jobs are slow or expensive.

File systems unfit as distributed storage backends: lessons from ten years of Ceph evolution

The Morning Paper

File systems unfit as distributed storage backends: lessons from 10 years of Ceph evolution Aghayev et al., In this case, the assumption that a distributed storage backend should clearly be layered on top of a local file system. Ceph is a widely-used, open-source distributed file system that followed this convention [of building on top of a local file system] for a decade. It should offer high bandwidth, horizontal scalability, fault tolerance, and strong consistency.

How Data Inspires Building a Scalable, Resilient and Secure Cloud Infrastructure At Netflix

The Netflix TechBlog

This operational component places some cognitive load on our engineers, requiring them to develop deep understanding of telemetry and alerting systems, capacity provisioning process, security and reliability best practices, and a vast amount of informal knowledge about the cloud infrastructure. People & Security How can we build a secure and restricted People Data Vault o provide a consolidated system of reference and allow apps to add additional metadata?

PyTorch-BigGraph: a large-scale graph embedding system

The Morning Paper

PyTorch-BigGraph: a large-scale graph embedding system Lerer et al., We find that PBG is much faster and more scalable than existing methods while achieving comparable performance. SysML’19. We looked at graph neural networks earlier this year, which operate directly over a graph structure.

Stuff The Internet Says On Scalability For August 17th, 2018

High Scalability

and others) you don’t know distributed systems.” Don't miss all that the Internet has to say on Scalability, click below and become eventually consistent with all scalability knowledge (which means this post has many more items to read so please keep on reading). Hey, it's HighScalability time: The amazing Zoomable Universe from 10^27 meters—about 93 billion light-years—down to the subatomic realm, at 10^-35 meters. Do you like this sort of Stuff?

MySQL High Availability Framework Explained – Part III: Failover Scenarios

High Scalability

Thus, whenever a master MySQL goes down (whether due to a MySQL crash, OS crash, system reboot, etc.), This ensures that the system continues to be available to the applications. This is a classical problem in any distributed system where each node thinks the other nodes are down, while in reality, only the network communication between the nodes is broken.

How scalable is my Nutanix cluster really?

n0derunner

Anyone who follows Dr. Neil Gunther and his Universal Scalability Law, will also recognize this curve. The USL states that taking the values of concurrency and throughput as inputs, we can in fact calculate the scalability of the system. I encourage anyone interested in scalability to check out his paper. Using his Excel spreadsheet, I was able to input the numbers from my test and derive values that determine scalability.

The Ultimate Guide To Building Scalable Web Scrapers With Scrapy

Smashing Magazine

The Ultimate Guide To Building Scalable Web Scrapers With Scrapy. The Ultimate Guide To Building Scalable Web Scrapers With Scrapy. First you’ll need to make sure you have a c-compiler on your system. Update your PATH variable so that homebrew packages are used before system packages: echo "export PATH=/usr/local/bin:/usr/local/sbin:$PATH" >> ~/.bashrc Daniel Ni. 2019-07-16T14:30:59+02:00. 2019-07-16T14:35:52+00:00.

Scaling symbolic evaluation for automated verification of systems code with Serval

The Morning Paper

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., Serval is a framework for developing automated verifiers of systems software. This is the goal of push-button verification : you still have to produce a rigorous specification of how the system is intended to behave, but instead of then laboriously proving that it does so, you just ‘push a button’ and let the machine spit out a proof (or contradiction) for you.

Code 53

Cherami: Uber Engineering’s Durable and Scalable Task Queue in Go

Uber Engineering

Cherami is a distributed, scalable, durable, and highly available message queue system we developed at Uber Engineering to transport asynchronous tasks. We named our task queue after a heroic carrier pigeon with the hope that this system would be just … The post Cherami: Uber Engineering’s Durable and Scalable Task Queue in Go appeared first on Uber Engineering Blog.

Back-to-Basics Weekend Reading - Virtualizing Operating Systems.

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Back-to-Basics Weekend Reading - Virtualizing Operating Systems. This weekends back-to-basics reading is on operating system virtualization. There are two papers that deserve the "classic" tag as they both form the basis for operating system virtualization that is in production today. All Things Distributed. By Werner Vogels on 20 July 2012 12:00 PM. Permalink. Comments ().

Back-to-Basics Weekend Reading - Hints for Computer Systems.

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Back-to-Basics Weekend Reading - Hints for Computer Systems Design. I find that going back to the basics of system, network and language design forces a good appreciation for keeping designs simple and focus on those fundamentals that matter most to users. Last weeks paper was the classic End-To-End Arguments in System Design , by J. All Things Distributed.

An empirical guide to the behavior and use of scalable persistent memory

The Morning Paper

An empirical guide to the behavior and use of scalable persistent memory , Yang et al., The Optane DIMM is the first scalable, commercially available NVDIMM. Applications and files systems access App Direct memory using CPU instructions offering a variety of options for controlling the ordering of store operations: cache-line flush, cache-line write back, and non-temporal stores (bypassing the cache hierarchy). The NOVA NVMM file system improves write performance by up to 7x.

HammerDB MySQL and MariaDB Best Practice for Performance and Scalability

HammerDB

As with the previous guides as an Intel employee (#IAMINTEL) the examples are taken from a MySQL 8 on Linux on Intel system and the approach is the same for whatever system you are testing although some of the settings you see may be different. As is exactly the same with PostgreSQL for system choice a 2 socket system is optimal for MySQL OLTP performance. System Setup: CPU, Memory and I/O Configuration.

Stuff The Internet Says On Scalability For January 10th, 2020

High Scalability

It's HighScalability time: Forrest Brazeal warns you not to spend your limited innovation credits building bespoke, complex systems that provide no direct value to your business, instead position yourself at the top of what heI calls the Wisdom/Cleverness Curve. Number Stuff: Don't miss all that the Internet has to say on Scalability, click below and become eventually. Wake up!

Cloud 36

Don't Give Up Yet… Keep-Alive!

DZone

² or HTTP/2 and if you have fully embraced the new HTTP/2 world in your entire system this article is mostly an anecdote of past issues. is still alive and kicking for many systems. ³ performance http dns tls performance analysis tcp keep-alive performance and scalability performance and testing load api testingWe founded StormForger Load and Performance Testing SaaS in 2014 and while much has changed since then, one thing hasn't.

The Andrew File System - All Things Distributed

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Back-to-Basics Weekend Reading - The Andrew File System. I am bringing with me a paper with one of first distributed systems that had actually see wide-spread commercial deployment. The Andrew File System (AFS) was developed at CMU and was much more than just a distributed file systems and had a very interesting caching and volume replication architecture. All Things Distributed.

HammerDB Best Practice for PostgreSQL Performance and Scalability

HammerDB

This post gives a HOWTO guide on system configuration for achieving top levels of performance with the HammerDB PostgreSQL TPC-C test. As an Intel employee (#IAMINTEL) the examples are taken from a PostgreSQL on Linux on Intel system, the approach is the same for whatever system you are testing although some of the settings you see may be different. Firstly for system choice a 2 socket system is optimal for PostgreSQL OLTP performance at the time of writing.