Scalegrid

AUGUST 30, 2019

Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker. Redis Strings. Redis Strings Use Cases.

Cache 232

Cache Ecommerce Social Media Database 232

Nick Desaulniers

JULY 23, 2015

21st Century C by Ben Klemens. There are a few other useful tools that came to mind that I’ve used when working with C and C++ codebases. C & C++ codebases; running these tools on the code or adding them to the codebases. with lots of C++ code have documents. was a great read. Code Formatters.

C++ 75

C++ Programming Open Source Code 75

CSS Wizardry

SEPTEMBER 28, 2023

There’s some subtle complexity designed to prevent people gaming the system, which is exactly what we’re trying to do. Again, to stop people gaming the system, Chrome decided that only images of a certain quality (or entropy ) will be considered as your LCP element. And it doesn’t necessarily spell bad news for our LQIP either.

Games 329

Games Ecommerce Cache Systems 329

Highly Scalable

SEPTEMBER 18, 2012

As such, it encompasses distributed system coordination, failover, resource management and many other capabilities. These developments gradually highlight a system of relevant database building blocks with proven practical efficiency. System Coordination. Scalability is one of the main drivers of the NoSQL movement.

Database 213

Database Latency C++ Scalability 213

Brendan Gregg

SEPTEMBER 5, 2021

They claimed that the ZFS file system was consuming 30% of CPU capacity. These included a breakdown of CPU time into percentages for "usr" (user: applications) and "sys" (system: the kernel). The other colors are yellow for C++, and red for other user-level code.) cd to the file system and ls(1) to see what's there.

Cache 141

Cache Cloud Code Java 141

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. Our UI runs on top of a custom rendering engine which uses what we call a “surface cache” to optimize our use of graphics memory.

Cache 167

Cache Design Testing Development 167

The Morning Paper

OCTOBER 18, 2020

But what about systems software? Radix Sort is carefully designed to make effective use of the L2 cache and sequential memory accesses, whereas Learned Sort is making random accesses all over the destination array. How can learned sort be adapted to make it cache-efficient? Sympathy for the machine. Evaluation.

Cache 137

Cache C++ Java Tuning 137

Percona

APRIL 3, 2023

Object identifiers (OIDs) are used internally by PostgreSQL as primary keys for various system tables. Type OID represents an object identifier. craft" SET WITHOUT OIDS; ALTER TABLE "public"."ports"

C++ 124

C++ Database Cache Storage 124

Percona

NOVEMBER 1, 2023

Without going further into the reasons for such a need, I wanted to refresh this subject in terms of overhead related to running the command on production systems. A lot has changed since then, but many production systems alive today still run with affected versions. sbtest1 | analyze | status | OK | + -+ + -+ -+ 1 row in set (0.00

Servers 117

Servers Database Cache C++ 117

Dynatrace

DECEMBER 15, 2020

Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 February 2021. The following operating systems will no longer be supported starting 01 May 2021. The following operating systems will no longer be supported starting 01 May 2021. Linux: Ubuntu 19.10.

Operating System 165

Operating System Java Mobile Cache 165

The Morning Paper

MAY 23, 2019

Compress objects, not cache lines: an object-based compressed memory hierarchy Tsai & Sanchez, ASPLOS’19. Existing cache and main memory compression techniques compress data in small fixed-size blocks, typically cache lines. ” The big idea. What about arrays? We want Zippads to compress both well.

Cache 61

Cache Benchmarking Hardware Java 61

Percona

MARCH 28, 2023

Every database system has to ensure durability and reliability. The same data, in the form of pages inside the Wiredtiger cache, are also marked dirty. At every checkpoint interval (Default 60 seconds), MongoDB flushes the modified pages that are marked as dirty in the cache to their respective data files (both collection-*.wt

Hardware 111

Hardware C++ Storage Cache 111

ACM Sigarch

OCTOBER 12, 2020

These, let’s call them metal languages , include FORTRAN (introduced in 1957), C (1972), and C++ (1985). Programmers continue to write applications in them, and they continue to evolve: the just approved C++20 standard is the latest example. Are caches large enough for this code? As Leiserson et al.

C++ 109

C++ Benchmarking Hardware Architecture 109

Smashing Magazine

JULY 6, 2021

This data would be collated and authored in a Web Content Management System (WCMS) by a content editor. We had marketers from a Traditional CMS background who resisted the idea of delving into multiple systems and services when using a headless CMS. From a developer perspective, not only static assets need to be cached on a CDN.

Cache 145

Cache Website Mobile Google 145

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 avg-cpu: %user %nice %system %iowait %steal %idle 14.81 avg-cpu: %user %nice %system %iowait %steal %idle 14.86 avg-cpu: %user %nice %system %iowait %steal %idle 14.95 avg-cpu: %user %nice %system %iowait %steal %idle 14.54

Cache 78

Cache C++ AWS Java 78

ACM Sigarch

APRIL 2, 2025

Figure 2: Comparison of four ISA assemblies corresponding to the same C code These distance-based instruction sets eliminate the need for register-renaming hardware, thereby resolving the bottlenecks associated with traditional register-based architectures. His work addresses diverse aspects of computer architecture and system software.

Efficiency 54

Efficiency Hardware Architecture Design 54

Sutter's Mill

SEPTEMBER 28, 2023

file compilation looks like when compiled on the command line on my laptop: But note you can still build cppfront as all-today’s-C++ using any fairly recent C++20 compiler because I distribute the sources also as C++ (just as Bjarne distributed the cfront sources also as C). Here’s what that reflect.h2

C++ 101

C++ Cache Code Design 101

Brendan Gregg

JULY 2, 2021

This is also applicable for people adding it to their own in-house monitoring systems. You likely already have agents running on all your customer systems. There are so many options it's really your own preference based on your existing system and customer environments. cachestat File system cache statistics line charts.

Latency 144

Latency Cache Energy Systems 144

HammerDB

FEBRUARY 26, 2024

Many of the HammerDB TPROC-C workloads have included features to prevent the database doing maintenance tasks for the previous run whilst another run is taking place. maria_purge = true } With this setting enabled, run your MariaDB TPROC-C workload as normal. Otherwise if you have version 10.7.0 tpcc { maria_count_ware = 30.

C++ 63

C++ Cache Database Virtualization 63

Sutter's Mill

FEBRUARY 13, 2017

I don’t get to Europe very often apart from ISO C++ standards meetings, but this spring I’ve been able to accept invitations for two English-language European events in the last week of April. Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). Description.

Latency 48

Latency C++ Hardware Performance 48

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually. Caches | 12.4G Caches | 12.4G

Cache 114

Cache Database Virtualization Servers 114

ACM Sigarch

MARCH 18, 2019

Computer systems, from the Internet-of-Things devices to datacenters, are complex and optimizing them can enhance capability and save money. Developing simulators, however, is time-consuming and requires a great deal of infrastructure development regarding a prospective system. Answered in Part 2.). Lazowska, et al.

Systems 61

Systems Latency Performance Analytics 61

The Morning Paper

NOVEMBER 5, 2019

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. A distributed file system provides a unified view over aggregated storage from multiple physical machines.

Storage 64

Storage Systems Hardware Efficiency 64

All Things Distributed

APRIL 27, 2011

Werner Vogels weblog on building scalable and robust distributed systems. And while many of our systems are based on the latest in computer science research, this often hasnt been sufficient: our architects and engineers have had to advance research in directions that no academic had yet taken. All Things Distributed. Comments ().

Technology 127

Technology Technology AWS Storage 127

The Morning Paper

MAY 12, 2019

An open-source benchmark suite for microservices and their hardware-software implications for cloud & edge systems Gan et al., Systems built with lots of microservices have different operational characteristics to those built from a small number of monoliths, we’d like to study and better understand those differences.

Open Source 61

Open Source Hardware Benchmarking Systems 61

Particular Software

MAY 8, 2023

However, in a message-based system, we no longer have a single call stack. The problem Because message-driven systems are asynchronous and run in multiple processes, debugging is naturally more complex than in a single-process application. Start order process| C[Order saga] C --> |3.

Systems 52

Systems C++ Azure Metrics 52

Percona

AUGUST 31, 2018

If queries perform full table scans where an index could be used or perform heavy joins or expensive aggregate operations, then the system can still perform poorly even if the database parameters are tuned. The PostgreSQL buffer is called shared_buffer which is the most effective tunable parameter for most operating systems.

Tuning 79

Tuning Database Performance Benchmarking 79

HammerDB

JUNE 27, 2022

HammerDB has graphical and command line interfaces for the Windows and Linux operating systems. An important concept was to simulate database users called Virtual Users in parallel (rather than concurrently) to accurately simulate a real database workload with multiple users running from separate systems. Why HammerDB was developed.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

ACM Sigarch

MARCH 25, 2019

The M/M/1 queue will show us a required trade-off among (a) allowing unscheduled task arrivals, (b) minimizing latency, and (c) maximizing throughput. The M/M/1 queue also assumes that the arrival rate is not affected by the unbounded number of tasks in the queue (called an “open system”). 50ms), but this is actually necessary.

Systems 54

Systems Latency Performance C++ 54

Percona

SEPTEMBER 28, 2023

Whenever you install your favorite MySQL server on a freshly created Ubuntu instance, you start by updating the configuration for MySQL, such as configuring buffer pool, changing the default datadir director, and disabling one of the most outstanding features – query cache. It’s a nice thing to do, but first things first.

Servers 128

Servers Best Practices Database Open Source 128

The Morning Paper

AUGUST 29, 2019

We focused on OLAP-oriented parallel data warehouse products available for AWS and restricted our attention to commercially available systems. As it is infeasible to test every OLAP system runnable on AWS, we chose widely-used systems that represented a variety of architectures and cost models. System initialisation time.

Architecture 76

Architecture Cloud Storage Serverless 76

SQL Performance

SEPTEMBER 21, 2022

Examples include the following: The set_options and required_cursor_options cached plan attributes, which you obtain using the sys.dm_exec_plan_attributes DMF. L0 AS ( SELECT 1 AS c. Another example is using a bitwise representation of a set of settings turned on or off in a given environment.

Servers 122

Servers C++ Code Cache 122

Adrian Cockcroft

JANUARY 29, 2023

There is no way to model how much more traffic you can send to that system before it exceeds it’s SLA. This is unfortunate, because we’d really like to be able to build systems that have an SLA that we can share with the consumers of our interfaces, and be able to measure how well we are doing.

Lambda 98

Lambda Latency Cache C++ 98

SQL Performance

SEPTEMBER 25, 2019

The general idea is to cache and replay results, saving repeated executions of inner-side operators wherever possible. When a spool is able to replay cached results, this is known as a rewind. You may find it helpful to think of a spool rebind as a cache miss, and a rewind as a cache hit. Lazy Table Spool.

Performance 104

Performance Cache Servers Education 104

All Things Distributed

SEPTEMBER 20, 2013

Not everybody agreed that the "N-ary Storage Model" (NSM) was the best approach for all workloads but it stayed dominant until hardware constraints, especially on caches, forced the community to revisit some of the alternatives. The first practical modern implementation is probably C-Store by Stonebraker, et al.

Storage 71

Storage Hardware Cache C++ 71

Official Blog - World Web Technology

AUGUST 27, 2023

Unlike other popular programming languages such as C or Pearl, PHP pages have HTML with embedded code with some start and end processing instructions that allow you to jump directly into and out of PHP mode. Regarding CMS, PHP can be integrated with other content management systems, such as WordPress, to build robust ecommerce websites.

Development 98

Development Ecommerce Open Source Website 98

HammerDB

JULY 5, 2022

So instead we are going to take a cut down version of the HammerDB TPROC-C driver script and do the same in Python and use the HammerDB infrastructure to measure performance. (We use stored procedures because, as the introductory post shows, using single SQL statements turns our database benchmark into a network test). usr/local/bin/tclsh8.6

Benchmarking 98

Benchmarking Database C++ Virtualization 98