Dynatrace

DECEMBER 14, 2021

Already in 2018, 82% of all travel bookings globally took place without human interaction. For some time, a travel company’s digital presence has been the primary way to attract and interact with customers. I tried a few times, then – as a last resort – I called the customer service number, but wait times were “longer than normal.”

Airlines 264

Airlines Social Media Entertainment Transportation 264

High Scalability

SEPTEMBER 21, 2018

” @mjpt777 : "Patterson indicated that rewriting Python into C gets you a 50 times speedup in performance". JoeEmison : The idea that any kind of planning will necessarily lead to overengineering is part of the anti-planning developer culture that misunderstands the agile manifesto.

Internet 126

Internet Internet Scalability Traffic 126

Dynatrace

DECEMBER 14, 2021

Already in 2018, 82% of all travel bookings globally took place without human interaction. For some time, a travel company’s digital presence has been the primary way to attract and interact with customers. I tried a few times, then – as a last resort – I called the customer service number, but wait times were “longer than normal.”

Airlines 246

Airlines Social Media Entertainment Transportation 246

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. So you're expecting to see only three rows in the result. 830 rows affected).

Best Practices 103

Best Practices C++ Code Design 103

Daniel Lemire

MARCH 18, 2019

In C or C++, you can safely convert from a stream of bytes to in-memory values using a function like ‘memcpy’ It is fast. get ( recipient ) ; Here is the time required to convert 1 million 32-bit integers on my 4.2GHz 2018 iMac: DataInputStream. An integer could be serialized as four bytes in a stream of bytes.

Java 124

Java C++ Code Speed 124

The Netflix TechBlog

APRIL 17, 2019

In 2018, AOM has published a specification for the AV1 video codec. In August 2018, Netflix’s Video Algorithms team and Intel’s Visual Cloud team decided to join forces on SVT-AV1 development. However, rav1e is written in Rust programming language, whereas an encoder written in C has a much broader base of potential developers.

Open Source 166

Open Source Scalability Speed Efficiency 166

The Netflix TechBlog

MARCH 13, 2020

As mentioned in our earlier blog post , Intel and Netflix have been collaborating on the SVT-AV1 encoder and decoder framework since August 2018. SVT-AV1 is written in C and can be compiled on major platforms, such as Windows, Linux, and macOS.

Open Source 157

Open Source Efficiency C++ Speed 157

O'Reilly

JANUARY 13, 2020

As we noted last year, the release of Java 11 in September 2018 brought a raft of new features, including many that give the release a significant, clear advantage for using containers. “Originally, we were hoping async/await syntax could be part of the 2018 edition of Rust, but it took longer to get things right.”

Programming 144

Programming Java Google C++ 144

Smashing Magazine

NOVEMBER 23, 2021

John C Barstow. It follows best practices, tries to present a strong visual identity, has good contrast levels, and uses Overpass for headings and body, which provides a unified and legible sans serif family of typefaces: See the Pen [Dyslexia-unfriendly design]([link] by John C Barstow. Adding A Dyslexia-Friendly Mode To A Website.

Website 140

Website C++ Best Practices Design 140

SQL Performance

OCTOBER 13, 2021

Combining the APPLY operator with an iTVF call, you can achieve the task nicely and cleanly, like so: SELECT C. Customers AS C CROSS APPLY Sales. GetTopCustOrders ( C. GetTopCustOrders ( C. custid , O. orderid , O. orderdate , O. FROM Sales. 263 rows affected). 263 rows affected).

Cache 144

Cache Strategy C++ Code 144

O'Reilly

MARCH 2, 2020

I don’t care what you call it, but large projects (a) are rarely successful, regardless of the methodology, because they (b) get overloaded with a lot of features that nobody needs but that sound good, and (c) forget what the customer or user really needs or wants. Key survey results: The C-suite is engaged with data quality.

Artificial Intelligence 25

Artificial Intelligence Software Architecture Programming C++ 25

Brendan Gregg

APRIL 30, 2018

The CFP for LISA18 is open now, and we’d love for you to submit talks and tutorials ideas by May 24th, 2018. In 2018, for the first time, LISA will be in Nashville, Tennessee, October 29-31, and will be hosted at the Omni Nashville Hotel , next to the Country Music Hall of Fame and Museum.

DevOps 41

DevOps Network Best Practices Programming 41

Brendan Gregg

APRIL 29, 2018

The CFP for LISA18 is open now, and we’d love for you to submit talks and tutorials ideas by May 24th, 2018. In 2018, for the first time, LISA will be in Nashville, Tennessee, October 29-31, and will be hosted at the Omni Nashville Hotel , next to the Country Music Hall of Fame and Museum.

DevOps 40

DevOps Network Best Practices Programming 40

CSS Wizardry

JULY 21, 2018

le|c|sa|sc)ss$/{print}' | nl. For a slightly more robust, but still imperfect method of identifying dead code, try this technique that I wrote up earlier in 2018. It’s often a good idea to see what files were changed last: any files that haven’t been altered in over a year are probably less important to current work.

Programming 150

Programming C++ Code Database 150

Sutter's Mill

JANUARY 11, 2021

C++20 supports two main assertion facilities… For each one, briefly summarize how it works, when it is evaluated, and whether it is possible for the programmer to specify a message to be displayed if the assertion fails. C++ Coding Standards (Addison-Wesley, 2004). spdlog: Fast C++ logging library (GitHub). [7] Alexandrescu.

C++ 82

C++ Programming Code Testing 82

Sutter's Mill

FEBRUARY 10, 2021

Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for preconditions. [1] Rewrite the example in Question 1 to show how to approximate the same effect using assertions in today’s C++. P0542: Support for contract based programming in C++” (WG21 paper, June 2018).

C++ 66

C++ Programming Code 66

Smashing Magazine

DECEMBER 2, 2021

C# Advent Calendar. It’s time for the fifth annual C# advent calendar that will feature two pieces of content every day. Anyone can contribute by sharing their blog posts, videos, articles or podcast episodes dedicated to C# development. Christmas Experiments (2018). Stoyan Stefanov on Twitter.

Design 120

Design Development Programming Website 120

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 Hit Ctrl-C to end. ^C Hit Ctrl-C to end. ^C 41 33681 ^C. avg-cpu: %user %nice %system %iowait %steal %idle 14.81

Cache 78

Cache C++ AWS Latency 78

Percona

SEPTEMBER 13, 2018

2018-09-03.09 > mysql-slowquery.log.2018-09-03.09 2018-09-03.09 2018-09-03.09 system time, 43.80M rss, 141.48M vsz # Current date: Tue Sep 4 15:54:21 2018 # Hostname: aahmed-GL503VD # Files: mysql-slowquery.log.2018-09-03.09 2018-09-03.09 Run pt-query-digest on the log file. . $ user time, 2.5s user time, 2.5s

C++ 61

C++ AWS Open Source Testing 61

Sutter's Mill

MARCH 8, 2021

v.empty() )]] ; template <typename T> void f( not_empty<vector<T>> const& v ); // (c) A pointer that is not null void f( int* p ) [[pre( p != Contracts, preconditions and invariants” ( Andrzej’s C++ blog , December 2020). [2] Explain your answer. Notes [1] A. Krzemieński. Dos Reis, J. Meredith, N.

C++ 62

C++ Programming 62

KeyCDN

SEPTEMBER 27, 2018

In 2018, this is absolutely essential for a number of reasons: Google favors HTTPS-secured sites HTTPS is required to use HTTP/2 HTTPS is required to use Brotli HTTPS helps improve performance, security, and trust If you’ve never heard of TLS, then maybe you’ve heard of the term SSL. The Benefits of TLS 1.3 via a browser.

Transportation 67

Transportation C++ Network Testing 67

Brendan Gregg

OCTOBER 7, 2018

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. Here's key differences as of August 2018: Type DTrace bpftrace. Attaching 2 probes. ^C

C++ 40

C++ Virtualization Programming Latency 40

SQL Performance

OCTOBER 14, 2020

Here’s the attempted solution using a CTE: WITH C AS. ( Using our trick with the TOP filter in the inner query, you prevent the unnesting of the table expression, like so: WITH C AS. ( The following code returns only shippers with a maximum order date that is on or after January 1 st , 2018: USE PerformanceV5 ; WITH C AS. (

C++ 52

C++ Servers Code Efficiency 52

Sutter's Mill

FEBRUARY 25, 2021

Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for preconditions. [1] Rewrite the example in Question 1 to show how to approximate the same effect using assertions in today’s C++. This has the big benefit that it works using today’s C++.

C++ 69

C++ Code Testing Systems 69

Scalegrid

AUGUST 15, 2019

Query Code for converting queries to five target language: Java, Python, C#, PHP, and JavaScript (Node.js). Community edition was released in early 2018, which lacks some features compared to paid versions, such as import/export, SSH connections, user management, support, etc. A Task Scheduler to automate repetitive MongoDB jobs.

Database 40

Database Servers Availability Monitoring 40

Sutter's Mill

JANUARY 27, 2021

Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] P0542: Support for contract based programming in C++” (WG21 paper, June 2018).

C++ 46

C++ Programming 46

Nick Desaulniers

OCTOBER 24, 2018

s -S & $ gdb vmlinux ( gdb ) target remote :1234 ( gdb ) hbreak start_kernel ( gdb ) c ( gdb ) lx-dmesg. It will seem that there’s no output, and QEMU isn’t responding to ctrl+c. Try ctrl+a , then c , to get a (qemu) prompt. Well at least we’re no longer in the dark (remember, ctrl+a , c , q to exit). enable-kvm.

C++ 56

C++ Hardware Virtualization Systems 56

Nick Desaulniers

DECEMBER 31, 0001

2020 Apr 6 Off by Two 2019 May 12 f() vs f(void) in C vs C++ 2019 Jan 18 Finding Compiler Bugs With C-Reduce 2018 Oct 24 Booting a Custom Linux Kernel in QEMU and Debugging It With GDB 2018 Jun 2 Speeding Up Linux Kernel Builds With ccache 2017 Sep 5 GCC vs LLVM Q3 2017 Commit Rates and Active Developer Counts 2017 May 31 Running Clang-Tidy (..)

C++ 40

C++ Speed Development 40

The Netflix TechBlog

JULY 1, 2019

In a previous post , we described how our TV application consists of a C++ SDK installed natively on the device, an updatable JavaScript user interface (UI) layer, and a custom rendering layer known as Gibbon. when we rolled them out globally at the end of 2018. both the full and fallback experiences?—?when

Cache 166

Cache Design Testing Development 166

Sutter's Mill

FEBRUARY 8, 2021

2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] 2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] How can we approximate those advantages?

C++ 64

C++ Lambda Code Efficiency 64

The Morning Paper

JUNE 20, 2019

In total, there were 112 such incidents over the period March – September 2018 (not all of them affecting external customers). Most Azure code is written in.Net managed languages such as C#, reducing memory leak bugs. Tools like CHESS and PCT [[link] are used to expose shared-memory concurrency bugs.

Cloud 81

Cloud Azure Cache C++ 81

Sutter's Mill

JANUARY 25, 2021

In the post-C++20 contracts proposal at [3], this is partly captured by the proposed basic levels of default , audit , and axiom , roughly intended to represent “cheap,” “expensive,” and “impossible” respectively. P0542: Support for contract based programming in C++” (WG21 paper, June 2018). Dos Reis, J. Meredith, N.

C++ 64

C++ Programming Cache Testing 64

HammerDB

OCTOBER 12, 2018

This post complements the previous best practice guides this time with the focus on MySQL and MariaDB and achieving top levels of performance with the HammerDB MySQL TPC-C test. SELECT DISTINCT c from sbtest where id between ? order by c. SELECT c from sbtest where id=? 10 rows in set (0.02 c_ytd_payment: 10.00

Best Practices 40

Best Practices Scalability Performance C++ 40

Randon ASCII

FEBRUARY 25, 2018

See the end of the post for an October 2018 bug fix update, or read the whole story: Flaky failures are the worst. The next step was a custom C++ program that opened the just-linked exe and called FlushFileBuffers on it. Update, October 2018. I also just heard that Windows 10 RS5 (1809, the fall 2018 update) has a fix.

Programming 79

Programming Hardware Cache Code 79

Brendan Gregg

AUGUST 18, 2019

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. . ### Source Here's the code to biolatency.bt: tools# cat -n biolatency.bt. Attaching 3 probes.

Latency 57

Latency C++ Cache Programming 57

Percona

JANUARY 17, 2019

select SQL_CALC_FOUND_ROWS FlightDate, UniqueCarrier, TailNum, FlightNum, Origin, OriginCityName, Dest, DestCityName, DepDelay, ArrDelay FROM ontime_ind o JOIN carriers c on o.carrier = c.carrier_code WHERE (carrier_name like 'United%' or carrier_name like 'Delta%') and ArrDelay > 30 ORDER by DepDelay DESC LIMIT 10G.

Cache 72

Cache C++ AWS Airlines 72

Smashing Magazine

JUNE 30, 2021

While Workers are the “thread” primitive of the web, they are very different from the threads you might be used to from C++, Java & co. Paul Lewis and I once explored actor-centric app architecture at Chrome Dev Summit 2018. Once the state object is updated, it sends a copy of the updated state object to the DOM actor.

Games 145

Games Architecture Code C++ 145