KeyCDN

OCTOBER 2, 2018

features collected articles that concentrate on what makes JavaScript work and what doesn’t. Visit website 11. Its sparse, Reddit-like style is convenient if you’re trying to avoid distractions, and the upvote system makes it easy to stay current with what’s trending at any given moment. Visit website 6.

Development 75

Development Website Design Code 75

SQL Performance

OCTOBER 14, 2020

I explained that when SQL Server optimizes a query involving derived tables, it applies transformation rules to the initial tree of logical operators produced by the parser, possibly shifting things around across what were originally table expression boundaries. You won’t miss anything important that you haven’t read before. ( SELECT S.

C++ 52

C++ Servers Code Efficiency 52

SQL Performance

SEPTEMBER 12, 2019

As an example with our task, suppose that you don't realize that the grouping element is determined implicitly, and you come up with the following query: SELECT shipperid , [ 2017 ] , [ 2018 ] , [ 2019 ] FROM Sales. What happened? 3 0 1 0 3 0 1 0 3 0 1 0 1 0 1 0 3 0 1 0 1 0 1 0 3 0 1 0 3 0 1 0 3 0 1 0 1 0 1 0.

Best Practices 103

Best Practices C++ Code Design 103

SQL Performance

OCTOBER 13, 2021

What Is an Inline Table-Valued Function? What’s Inline About iTVFs? The inlining concept is applicable to all four kinds of named table expressions T-SQL supports, and in part involves what I described in Part 4 in the series as unnesting/substitution. In my examples I’ll use a sample database called TSQLV5.

Cache 144

Cache Strategy C++ Code 144

KeyCDN

OCTOBER 24, 2018

As of August 2018, Helsinki alone had a population of almost 650,000 people. What’s Next? However, now with the Helsinki edge server in production, this helps further close the gap between visitors who live in Finland and the nearest KeyCDN POP they have access to. In this case, the Helsinki POP’s identifier is fihe.

Internet 48

Internet Internet Speed Network 48

Alex Russell

JANUARY 30, 2024

What's changed since last year? Armed with that information, it's possible to use this estimator to quickly understand what sort of first-load experience users at the margins can expect. For the front end to improve, it must finally learn to operate within the envelope of what's possible on most devices. Give it a try!

Performance 90

Performance Network Mobile Speed 90

Smashing Magazine

JUNE 3, 2022

2022-06-03T14:03:11+00:00. What would the world’s most ideal, best practice and design research-driven highly legible serif, sans serif, and slab serif possibly be like? What characteristics and themes would be most advisable, and do we need a central public list of aspects and features? Thomas Bohm. 2022-06-03T10:00:00+00:00.

Performance 110

Performance Design Best Practices Testing 110

Nick Desaulniers

OCTOBER 24, 2018

We’ll play stupid and see what errors we hit, and how to fix them. This is missing an important flag, but it’s important to see what happens when we forget it. Before booting a compiled Linux kernel image on actual hardware, it can save us time and potential headache to do a quick boot in a virtual machine like QEMU. as a sanity check.

C++ 56

C++ Hardware Virtualization Systems 56

Testsigma

FEBRUARY 12, 2021

In 2021 what can we expect? ” 11. Gartner stated that Artificial Intelligence computing resources are to expand by 5 times between 2018 and 2023. The post Software Testing Trends 2021 – What can we expect? Gartner’s 2020 projections first included the trend of hyperautomation. billion in 2016.

Artificial Intelligence 92

Artificial Intelligence Software Software IoT 92

Brendan Gregg

AUGUST 18, 2019

The probe specifies what events to instrument, the filter is optional and can filter down the events based on a boolean expression, and the action is the mini program that runs. 6 * 7 * Copyright 2018 Netflix, Inc. the "License") 9 * 10 * 13-Sep-2018 Brendan Gregg Created this. was just released. BEGIN Start of bpftrace.

Latency 68

Latency C++ Cache Programming 68

Sutter's Mill

JANUARY 11, 2021

What is an assertion, and what is it used for? And in addition to finding bugs today, assertions verify that what you believe is “obviously true” and wrote correctly today actually stays true as the code is maintained in the future. 1,2] How well do we understand them… exactly? GUIDELINE: Assert liberally. [3]

C++ 58

C++ Programming Code Testing 58

HammerDB

NOVEMBER 5, 2018

This wait by the session is what is typically seen as a log wait. What can be seen fairly quickly is that the dominant colour is orange and the majority of database time is spent on “log file sync”, waiting for these synchronous writes to the redo log. Logging Waits.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

KeyCDN

MARCH 14, 2019

No one could have imagined what the web would look like today 20 years ago, so who knows what the coming decades will hold. Serverless Applications Managing your own server is so 2018. Smart developers are always looking ahead for ways to adapt in the ever changing world of web development.

Development 101

Development Blockchain Serverless Social Media 101

PDC

APRIL 14, 2019

For example, PDC’s Beskow system has 11 cabinets, 515 blades, 2,060 compute nodes, and a total of 67,456 cores. This is vividly reflected in the design on the Titan supercomputer , which is still among the world’s top 10 most powerful supercomputers (as of the November 2018 Top500 list). The Top500 list (Nov 2018).

Energy 40

Energy Benchmarking Efficiency Website 40

Nick Desaulniers

JUNE 2, 2018

Sat Mar 17 03:04:59 UTC 2018. Let’s see what happens to our build time for subsequent builds with a hot cache: No Cache. Let’s see what happens to our build time for subsequent builds with a hot cache: No Cache. For KBUILD, we can swap our compiler by using CC= arg. make clean $ time make -j4. Cold Cache. Hot Cache.

Speed 46

Speed Cache C++ Systems 46

SQL Server According to Bob

FEBRUARY 5, 2018

02/05/2018 09:11:18 02/05/2018 19:11:18 krbtgt/DOMAINNAME@DOMAINNAME. renew until 02/06/2018 09:11:15. 01/16/2018 21:46:30.858159060 Error [security.kerberos] <35352/0x3c4> Error acquiring credentials in GetUserCredHandle MAJOR: 0x000D0000 Unspecified GSS failure. Level = Debug.

Servers 40

Servers Code Cache Traffic 40

Rigor

FEBRUARY 8, 2018

Valentine’s Day is right around the corner, and while we appreciate any opportunity to consume chocolate, what we really love is our customers! Through this partnership, they were able to see an 11% increase in conversions. He’s even been named a Customer Success Leader to watch in 2018! What about smaller improvements?

C++ 40

C++ Network Monitoring Engineering 40

Percona

JANUARY 17, 2019

Here is what we learned comparing Aurora PQ performance to native MySQL query execution: Select count(*), not using index: 10x performance increase with Aurora PQ. sec) The table is very wide, 84 columns. The InnoDB buffer pool is not used when Parallel Query is utilized. Query 1b: simple, avg. Summary of simple query performance.

Cache 46

Cache C++ AWS Airlines 46

Rigor

SEPTEMBER 3, 2019

Reading time 11 min You’ve heard it before: it’s never too early to prepare for worst-case scenarios on Black Friday and Cyber Monday (or other high-load days) so that you can avoid or mitigate critical issues and site failures. Do you have a good sense of what will occur during any peak periods? Case studies abound.

Website 74

Website Cache Ecommerce Traffic 74

Alex Russell

APRIL 29, 2021

First, what follows is not a critique of individuals on the Safari team or the WebKit project; it is a plea for Apple to fund their work adequately [2]. What's unhealthy is an engine trailing far behind for many years. What follows is an attempt at a full an accounting of features launched in this era. CSS Grid and ES6 ).

Media 145

Media Games Education Engineering 145

HammerDB

OCTOBER 8, 2018

This limitation is at the database level rather than the hardware level, nevertheless with up to date hardware (from mid-2018) PostgreSQL on a 2 socket system can be expected to deliver more than 2M PostgreSQL TPM and 1M NOPM with the HammerDB TPC-C test. . lrwxrwxrwx 1 root root 28 Oct 11 03:41 pgsql -> /mnt/ssd/postgresqlsrc/pgsql.

Best Practices 40

Best Practices Scalability Performance Hardware 40

Smashing Magazine

JULY 29, 2019

A 2018 study by cable.co.uk found that Zimbabwe was the most expensive country in the world for mobile data, where 1 GB cost an average of $75.20, ranging from $12.50 Meanwhile, a study of the cost of broadband in 2018 shows that a broadband connection in Niger costs $263 ‘per megabit per month’. Just how expensive are we talking?

Cache 96

Cache Google Mobile Network 96

Percona

AUGUST 10, 2018

What is autovacuum ? In fact, you should not set it to OFF in a production system unless you are 100% sure about what you are doing and its implications. avi@percona:~$ps -eaf | egrep "/post|autovacuum" postgres 2862 1 0 Jun17 pts/0 00:00:11 /usr/pgsql-10/bin/postgres -D /var/lib/pgsql/10/data postgres 2868 2862 0 Jun17 ?

Tuning 44

Tuning Cache Database Storage 44

Testsigma

DECEMBER 8, 2019

Revenue from the AI software market has been increasing year by year as can be seen in the graph below and is also expected to rise in 2020: Revenues from the artificial intelligence (AI) software market worldwide from 2018 to 2025 from Statista. Suggested Reading: Software Test Automation : What To Expect In The Near Future.

IoT 78

IoT Software Software Artificial Intelligence 78

MachMetrics

JUNE 30, 2021

What is Google Web Vitals? Lighthouse says on web pages on mobile devices take an average of 9 – 11 seconds. seconds (on desktop) …What we found was that, unsurprisingly, a page’s load time directly impacts bounce rate….as Pingdom, 2018. That’s a big problem.” Daniel An, Google, 2017. If your LCP is less than 2.5

Cache 78

Cache Speed Google Website 78

Smashing Magazine

OCTOBER 15, 2018

2018-10-15T14:30:13+02:00. First, we’ll want to make clear what we mean by “modern” and “legacy” browsers. Smart Bundling: How To Serve Legacy Code Only To Legacy Browsers. Smart Bundling: How To Serve Legacy Code Only To Legacy Browsers. Shubham Kanodia. 2019-04-29T18:34:58+00:00. Size (minified ES6). Size (minified ES5). Difference.

Code 58

Code Retail Mobile Website 58

SQL Server According to Bob

DECEMBER 18, 2018

sr0 11:0 1 1024M 0 rom. Durability: “In database systems , durability is the ACID property which guarantees transactions that have committed will survive permanently. For example, if a flight booking reports that a seat has successfully been booked, then the seat will remain booked even if the system crashes.” – [link]. 0 lvm [SWAP]. ??cl-home

Servers 90

Servers Media Cache Storage 90

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. virtual (bgregg-c5.9xl-i-xxx) 02/09/2018 _x86_64_ (36 CPU) 05:24:51 PM proc/s cswch/s. Many thanks to the engineers working hard to develop workarounds to these processor bugs.

Performance 75

Performance Benchmarking Cache Tuning 75

O'Reilly

NOVEMBER 28, 2023

What’s the reality? We wanted to find out what people are actually doing, so in September we surveyed O’Reilly’s users. Our survey focused on how companies use generative AI, what bottlenecks they see in adoption, and what skills gaps need to be addressed. What’s Holding AI Back? Or is there still room for growth?

Open Source 107

Open Source Artificial Intelligence Google Infrastructure 107

Smashing Magazine

JANUARY 11, 2021

How do we actually know where we stand in terms of performance, and what exactly our performance bottlenecks are? So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the project until the final release of the website — what would that look like?

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

NOVEMBER 23, 2021

2021-11-23T10:00:00+00:00. 2021-11-23T13:06:37+00:00. What this means for your font selection is that you merely have to select fonts with legibility in mind. Adding A Dyslexia-Friendly Mode To A Website. Adding A Dyslexia-Friendly Mode To A Website. John C Barstow. All right, problem solved, let’s go home! Well, not really.

Website 131

Website C++ Best Practices Design 131

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. virtual (bgregg-c5.9xl-i-xxx) 02/09/2018 _x86_64_ (36 CPU) 05:24:51 PM proc/s cswch/s. Many thanks to the engineers working hard to develop workarounds to these processor bugs.

Performance 40

Performance Benchmarking Cache Tuning 40

Smashing Magazine

NOVEMBER 22, 2021

2021-11-22T10:30:00+00:00. 2021-11-22T11:06:56+00:00. Let’s begin by describing who we are, what are our use-cases, and our challenges. Another limiting factor was the lack of data and insight into exactly what the bottlenecks were so that we could know exactly where to focus our efforts for maximum effect. Dan Shappir.

Website 126

Website Performance Google Media 126

The Netflix TechBlog

OCTOBER 14, 2021

What is Certificate Path Building? If you want the really detailed answer to “What is Certificate Path Building” you can take a look at RFC 4158. But what happens if we can’t be sure what trust anchor the client has, such as the second example above where the server doesn’t know if the client will trust DST Root CA X3 or ISRG Root X1?

Servers 165

Servers Testing Best Practices Java 165

High Scalability

SEPTEMBER 14, 2018

Thus, despite both quoting 11 nines of durability against hardware failures, S3 is durable against failures that B2 is not, and is thus better. Programming Rants : This time PHP7 became the best performing programming language implementation, also the least memory consumption (I'm amazed with what they did in version 7). changelog ).

Internet 30

Internet Internet Scalability Education 30

High Scalability

NOVEMBER 16, 2018

The main takeaway is the distributed consensus kills performance, that local state can actually be a good thing, use an immutable log as the source of truth (basically what the Kafka folks have been preaching). That's why in 2018, consensus is, infrastructure for systems has been replaced by infrastructure for applications (k8s).

Internet 28

Internet Internet Scalability Energy 28

O'Reilly

MAY 19, 2020

O’Reilly Learning > We wanted to discover what our readers were doing with cloud, microservices, and other critical infrastructure and operations technologies. Technical leads and architects (about 11%) are next, followed by software and systems architects (9+%). For this audience, SRE’s future is brighter than AI’s, however.

Cloud 141

Cloud Serverless AWS Architecture 141