High Scalability

DECEMBER 21, 2018

Wake up! It's HighScalability time: Have a very scalable Xmas everyone! See you in the New Year. Do you like this sort of Stuff? Please support me on Patreon. I'd really appreciate it. Still looking for that perfect xmas gift? What could be better than a book on the cloud? Explain the Cloud Like I'm 10. And if you know someone with hearing problems they might find Live CC useful. 33.5 billion : Pornhub visits; 122 million : miles traveled by Santa; 32,342 : government requests to Apple for user

Internet 137

Internet Internet Scalability Serverless 137

MachMetrics

DECEMBER 20, 2018

Think about the last time you went out to dinner. Did you order a 5 course meal, but then only eat 2 of them? Of course not, that would be a waste. So then why are you serving an entire page of images to your website visitors when they’re only looking above the fold? I had previously written about lazy-loading your images – but at the time the implementations were still new and cumbersome.

Cache 75

Cache Speed Internet Internet 75

n0derunner

DECEMBER 17, 2018

How to reduce database restore time by 50%. During.Next 2018 in London, Nutanix announced performance improvements in the core-datapath said to give up to 2X performance improvements. Here’s a real-world example of that improvement in practice. I am using X-Ray to simulate a 1TB data restore into an existing database. Specifically the IO sizes are large, an even split of 64K,128K,256K, 1MB and the pattern is 100% random across the entire 1TB dataset. bssplit=64k/20:128k/20:256k/20:512k/2

Performance 64

Performance Benchmarking Storage Network 64

Speed Curve

DECEMBER 19, 2018

This blog post has a simple conclusion: Load script asynchronously! Simple, and yet the reality is that most scripts are still loaded synchronously. Understanding the importance of loading scripts asynchronously might help increase adoption of this critical performance improvement, so we're going to walk through the evolution of async script loading starting way back in 2007.

Internet 53

Internet Internet Website Traffic 53

High Scalability

DECEMBER 18, 2018

Who's Hiring? pMD is a fast­ growing , highly rated health care technology company that has been recognized as a Best Place to Work by SF Business Times, Modern Healthcare, and Inc. Senior DevOps Engineer : Your engineering work will focus on using your deep knowledge of the web stack including firewalls, web applications, caches and data stores ­ to create innovative infrastructure architectures that are resilient, scalable, and blazingly fast.

Healthcare 122

Healthcare Best Practices DevOps Cache 122

Particular Software

DECEMBER 18, 2018

The wait is over! Today we’re releasing the new Azure Service Bus transport, which is fully compatible with NServiceBus 7 and.NET Core. You will now be able to run NServiceBus endpoints using Azure Service Bus anywhere. With the release of the new NServiceBus Azure Service Bus transport, we are now able to take full advantage of.NET Core and Azure. Getting up and running was simple and we don't have to worry about managing and maintaining queue databases anymore.

Transportation 49

Transportation Azure Benchmarking Availability 49

ACM Sigarch

DECEMBER 17, 2018

“A lot of people have gone further than they thought they could because someone else thought they could” — Zig Ziglar, renowned motivational speaker. Good mentoring can have an outsized impact on the careers of students, especially during early stages of their career. Countless stories that credit the right advice at the right time for launching outstanding career trajectories are commonplace.

Architecture 49

Architecture Network Strategy Systems 49

The Polyglot Developer

DECEMBER 17, 2018

A long time ago when I had been exploring session management in Node.js, I had written a tutorial titled, Session Management in Your Express.js Web Application. This was a basic tutorial that is still very functional today, however little things have changed since then when it comes to how the web works. For example, in 2015 HTTPS was never a requirement and we weren’t exposed to all the frontend web frameworks that exist today.

Development 45

Development 45

Speed Curve

DECEMBER 17, 2018

The Internet really is a complicated series of tubes. As a result, any time-based metrics we capture can have variations as those tubes wobble a bit as we shove data down them. To help reduce that variation, when we do synthetic tests, we always load a page at least three times and take the median result. But even then you'll find that, over time, your charts will still show plenty of variation.

Metrics 45

Metrics Traffic Internet Internet 45

Percona

DECEMBER 20, 2018

Let’s look at some of the most popular Percona Database Performance Blog posts in 2018. The closing of a year lends itself to looking back. And making lists. With the Percona Database Performance Blog, Percona staff and leadership work hard to provide the open source community with insights, technical support, predictions and metrics around multiple open source database software technologies.

Database 41

Database Tuning Performance AWS 41

HammerDB

DECEMBER 20, 2018

The reason for reporting both TPM and NOPM performance metrics is for both historical and performance reasons. On the historical side HammerDB started out as Hammerora and only supported Oracle so it only needed to report Oracle TPM. However as other databases were added they all record TPM in a slightly different way so it wasn’t possible to compare TPM between different database for example Oracle and SQL Server.

Metrics 40

Metrics Performance Benchmarking Database 40

SQL Server Performance

DECEMBER 18, 2018

There are several for creating queries that return data from multiple tables. The one you choose depends on your data retrieval requirements and the underlying structure of the database. In this three part article series, I will demonstrate how to combine data from multiple tables by using UNION, INTERSECT, and EXCEPT. You’ll perform advanced queries […].

Servers 40

Servers Database Performance Tuning 40

SQL Server According to Bob

DECEMBER 18, 2018

I was asked to validate the SQL Server behavior in light of the error condition involving fsync/fdatasync outlined in this article. An example of the error: The application does a buffered write and receives success. ( This means data can be stored in file system cache, non-stable media. ) An fsync/fdatasync is used to make sure the data is stored in stable media.

Servers 40

Servers Media Cache Software Engineering 40

n0derunner

DECEMBER 18, 2018

How to improve large DB read performance by 2X. Nutanix AOS 5.10 ships with a feature called Autonomous Extent Store (AES). AES effectively provides Metadata Locality to complement the existing data locality that has always existed. For large datasets (e.g. a 10TB database with 20% hot data) we observe a 2X improvement in throughput for random access across the 2TB hot dataset.

Performance 40

Performance Cache Hardware Storage 40

SQL Server According to Bob

DECEMBER 18, 2018

When Creating, Renaming or Deleting (remove/unlinking) a file, Linux requires the direct parent directory to be synchronized. As documented in the manpage for fsync core changes to the directory require the directory itself to be synchronized. “Calling fsync does not ensure that the entry in the directory containing the file has also reached disk. For that an explicit fsync on a file descriptor for the directory is also needed.”.

Servers 40

Servers Software Engineering Engineering Software 40

SQL Server According to Bob

DECEMBER 18, 2018

Overview. SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Durability: “In database systems , durability is the ACID property which guarantees transactions that have committed will survive permanently.

Servers 90

Servers Media Cache Storage 90