All Things Distributed

SEPTEMBER 3, 2013

Amazon ElastiCache is a fully managed, in-memory caching service for customers to optimize the latency, performance and cost of their read workloads. Integration with Amazon CloudWatch gives customers visibility into key performance metrics, further simplifying system management.

Cache 129

Cache Cloud Performance Retail 129

Scalegrid

JULY 29, 2020

However, these must be set up outside the PostgreSQL system, while PgBouncer can offload this to the PostgreSQL server. PgBouncer provides a virtual database that reports various useful statistics. Patterns of data access would play a role, as would the latencies involved based on your architecture. Administration.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

IO River

NOVEMBER 2, 2023

Given its unchanging nature, static content is ideal for caching. This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Login & Authentication: Systems that verify user credentials and maintain session-specific data.

Architecture 52

Architecture Performance Internet Internet 52

ScaleOut Software

MAY 15, 2014

Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Given all this, we thought it would be a good opportunity to see how we are doing relative to the competition, and in particular, relative to Microsoft’s AppFabric caching for Windows on-premise servers.

Cache 40

Cache Servers Network Design 40

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Login & Authentication: Systems that verify user credentials and maintain session-specific data.Â

Architecture 52

Architecture Performance Internet Internet 52

Brendan Gregg

AUGUST 18, 2019

For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. For smaller environments, it can be of more use helping eliminate latency outliers. bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set.

Latency 68

Latency C++ Cache Programming 68

The Morning Paper

DECEMBER 10, 2019

This is a companion paper to the " persistent problem " piece that we looked at earlier this week, going a little deeper into the object pointer representation choices and the mapping of a virtual object space into physical address spaces. " Epheremal virtual addresses don’t cut it as the basis for persistent pointers.

Hardware 52

Hardware Virtualization Operating System Programming 52

Percona

APRIL 17, 2023

In this blog post, we will discuss the best practices on the MongoDB ecosystem applied at the Operating System (OS) and MongoDB levels. Operating System (OS) settings Swappiness Swappiness is a Linux kernel setting that influences the behavior of the Virtual Memory manager when it needs to allocate a swap, ranging from 0-100.

Best Practices 52

Best Practices Design Tuning Database 52

The Morning Paper

APRIL 14, 2019

Just as today’s systems offer memory protection, they call this time protection. Microarchitectural state of interest includes data and instruction caches, TLBs, branch predictors, instruction- and data-prefetcher state machines, and DRAM row buffers. set out a principled basis for protecting against this class of attacks.

Hardware 44

Hardware Cache Latency Speed 44

The Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. PLOS’19.

Hardware 56

Hardware Programming Media Storage 56

The Netflix TechBlog

NOVEMBER 9, 2022

While we understand it’s virtually impossible to achieve a linear increase in throughput as the number of vCPUs grow, a near-linear increase is attainable. What’s worse, average latency degraded by more than 50%, with both CPU and latency patterns becoming more “choppy.” This was our starting point for troubleshooting.

Hardware 363

Hardware Cache Performance Latency 363

Enprowess

SEPTEMBER 7, 2021

Real-time software system – Collaboration tools used for video/audio conferencing, document writing, Chat applications, etc. It helps isolated bugs quickly and reduces system downtime. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. – An Overview of the React. Faster virtual DOM.

Open Source 52

Open Source Virtualization Programming Servers 52

Smashing Magazine

OCTOBER 31, 2023

You might think of it like racing a car in virtual reality, where the conditions are decided in advance, rather than racing on a live track where conditions may vary. If throttling is applied at the operating system level , then the metrics match what a real user with those network conditions would experience.

Speed 97

Speed Google Website Metrics 97

Brendan Gregg

JANUARY 17, 2018

OSes usually show you virtual memory and resident memory, shown as the "VIRT" and "RES" columns in top. Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). That's the working set size. It is used for capacity planning and scalability analysis. Consider these overheads.

Cache 71

Cache Latency C++ Programming 71

All Things Distributed

OCTOBER 2, 2017

With these requirements in mind, and a willingness to question the status quo, a small group of distributed systems experts came together and designed a horizontally scalable distributed database that would scale out for both reads and writes to meet the long-term needs of our business. This was the genesis of the Amazon Dynamo database.

Internet 128

Internet Internet AWS Performance 128

Percona

MAY 15, 2023

In both cases, when using virtually-synchronous replication, the process will require certification from each node and local (by node) write; as such, the number of writes is NOT distributed across multiple nodes but duplicated. As well, very few cases are in need to have a full system/solution to provide scalability with sharding.

Traffic 126

Traffic Scalability Database Servers 126

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. This improves page load time and caching during navigations.

Performance 145

Performance Cache Media Metrics 145

All Things Distributed

JANUARY 18, 2012

Werner Vogels weblog on building scalable and robust distributed systems. The original Dynamo design was based on a core set of strong distributed systems principles resulting in an ultra-scalable and highly reliable database system. Amazon DynamoDB offers low, predictable latencies at any scale. All Things Distributed.

Scalability 167

Scalability Database Ecommerce Latency 167

Brendan Gregg

JANUARY 16, 2018

OSes usually show you virtual memory and resident memory, shown as the "VIRT" and "RES" columns in top. Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). That's the working set size. It is used for capacity planning and scalability analysis. Consider these overheads.

Cache 40

Cache Latency C++ Programming 40

HammerDB

NOVEMBER 5, 2018

Additionally for the log disk component it is latency for an individual write that is crucial rather than the total I/O bandwidth. The first example shows a data load, the second a TPC-C based workload with 5 virtual users and the 2nd example with 10 virtual users. SQL> alter system flush buffer_cache; System altered.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

SQL Server According to Bob

JANUARY 11, 2020

This will help you increase system performance and avoid I/O environment errors. Important When planning, deploying, and maintaining a Microsoft SQL Server installation, ensure that the I/O system supports all the factors outlined in this article. The modifications persist even in the event of a system failure.

Servers 40

Servers Cache Media Hardware 40

The Netflix TechBlog

SEPTEMBER 24, 2021

Lastly, the packager kicks in, adding a system layer to the asset, making it ready to be consumed by the clients. Uploading and downloading data always come with a penalty, namely latency. Virtual Assembly Figure 3 describes how a virtual assembly of the encoded chunks replaces the physical assembly used in our previous architecture.

Cloud 237

Cloud Media Storage Cache 237

Alex Russell

APRIL 29, 2021

After 20 years of neck-in-neck competition, often starting from common code lineages, there just isn't that much left to wring out of the system. Consistent improvement is the name of the game, and it can still have positive impacts, particularly as users lean on the system more heavily over time. Media Session API. Offscreen Canvas.

Media 145

Media Games Education Engineering 145

SQL Server According to Bob

JANUARY 11, 2020

​​ Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation.

Servers 40

Servers Cache Database Media 40