All Things Distributed

JULY 14, 2015

Streams provide you with the underlying infrastructure to create new applications, such as continuously updated free-text search indexes, caches, or other creative extensions requiring up-to-date table changes. DynamoDB Streams enables your application to get real-time notifications of your tables’ item-level changes.

Database 158

Database Lambda AWS IoT 158

Percona

MARCH 28, 2023

” This acts as a step to ensure durability by recovering lost data from the same journal files in case of crashes, power, and hardware failures between the checkpoints (see below) Here’s what the process looks like. The same data, in the form of pages inside the Wiredtiger cache, are also marked dirty. wt and index-*.wt).

Hardware 111

Hardware C++ Storage Cache 111

Alex Russell

APRIL 29, 2021

Apple forces developers of competing browsers to use their engine for all browsers on iOS , restricting their ability to deliver a better version of the web platform. They are, pound for pound, some of the best engine developers globally and genuinely want good things for the web. So is speedy resolution and agreement.

Media 145

Media Games Education Engineering 145

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? Service workers that will cache the bytecode result of a parsed and compiled script. After that, it’ll be mitigated by cache. It’s time to come to terms that your customers aren’t using the same powerful hardware as you. What changed in PageSpeed 5.0? Monitoring Time to Interactive.

Google 73

Google Engineering Speed Mobile 73

Brendan Gregg

MARCH 16, 2024

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. And for leaf routines (which never establish a frame), this is a non-issue.

Java 137

Java Cache Google Hardware 137

Percona

MAY 2, 2023

At the same time that I see database engineers relying on the tool, sites such as StackOverflow are banning ChatGPT. ChatGPT: The InnoDB buffer pool is used by MySQL to cache frequently accessed data in memory. If we expand the cache concept more, the buffer pool could be even less if the working set (hot data) is smaller.

Social Media 145

Social Media Database Servers Cache 145

Percona

JUNE 22, 2023

This includes metrics such as query execution time, the number of queries executed per second, and the utilization of query cache and adaptive hash index. query cache: Disable (query_cache_size: 0, query_cache_type:OFF) innodb_adaptive_hash_index: Check adaptive hash index usage to determine its efficiency.

Performance 136

Performance Monitoring Traffic Database 136

Percona

JUNE 22, 2023

Defining high availability In general terms, high availability refers to the continuous operation of a system with little to no interruption to end users in the event of hardware or software failures, power outages, or other disruptions. If a primary server fails, a backup server can take over and continue to serve requests.

Availability 132

Availability Database Open Source Hardware 132

Percona

AUGUST 8, 2023

Hardware considerations The first thing we have to consider here is the resources that the underlying host provides to the database. Global caches like the InnoDB buffer pool and MyISAM key cache and session-level caches like the sort buffer, join buffer, random read buffer, etc. Do these queries use more caches?

Traffic 98

Traffic Cache Monitoring Database 98

Highly Scalable

APRIL 2, 2012

The rationale behind these methods is that frontend should be able to fetch transient information very efficiently and separately from fetching of heavy-weight domain entities because this information cannot be cached. So, the only way was to cache all necessary data to minimize interaction with RDBMS. Hierarchical Navigation Engine.

Ecommerce 100

Ecommerce Cache Storage Architecture 100

DZone

AUGUST 16, 2019

It’s not just a simple tweak you can turn on/off; it’s a long-time process that touches almost every single item in your stack, including both hardware and software sides of the system. Application scalability is the potential of an application to grow in time, being able to efficiently handle more and more requests per minute (RPM).

Scalability 145

Scalability Efficiency Hardware Software 145

Scalegrid

JANUARY 21, 2025

To monitor Redis instances effectively, collect Redis metrics focusing on cache hit ratio, memory allocated, and latency threshold. Advanced monitoring techniques enable you to identify potential issues, such as high latency, CPU utilization, command throughput, and cache hit rate before they become major problems.

Strategy 130

Strategy Monitoring Latency DevOps 130

All Things Distributed

JANUARY 18, 2012

Dynamo has been in use by a number of core services in the ecommerce platform, and their engineers have been very satisfied by its performance and incremental scalability. With Dynamo we had taken great care to build a system that met the requirements of our engineers. Lessons learned from Amazons Dynamo.

Scalability 162

Scalability Database Ecommerce Latency 162

ACM Sigarch

NOVEMBER 1, 2019

This blog post gives a glimpse of the computer systems research papers presented at the USENIX Annual Technical Conference (ATC) 2019, with an emphasis on systems that use new hardware architectures. GAIA proposed to expand the OS page cache into accelerator memory. ATC ’19 was refreshingly different. Heterogeneous ISA.

Architecture 12

Architecture Hardware Cache Storage 12

Scalegrid

DECEMBER 21, 2023

To monitor Redis® instances effectively, collect Redis metrics focusing on cache hit ratio, memory allocated, and latency threshold. Advanced monitoring techniques enable you to identify potential issues, such as high latency, CPU utilization, command throughput, and cache hit rate before they become major problems.

Strategy 130

Strategy Monitoring Latency DevOps 130

Scalegrid

JANUARY 5, 2024

Components of DBMS The primary component of a DBMS is the storage engine, which operates alongside software components such as the query language, query processor, optimization engine, metadata catalog, and log manager. By implementing data abstraction techniques, these challenges can be addressed more effectively.

Efficiency 147

Efficiency Storage Database Scalability 147

HammerDB

JUNE 27, 2022

It enables the user to measure database performance and make comparative judgements about database hardware and software. These factors meant that often when looking for database performance information, the results for a particular combination of software and hardware were not available. Cached vs Scaled Workloads.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

Brendan Gregg

FEBRUARY 28, 2023

link] 2021 - [Trader 21] Tiffany Trader, “Cerebras Second-Gen 7nm Wafer Scale Engine Doubles AI Performance Over First-Gen Chip ,” [link] Apr 2021 - [Ghigoff 21] Yoann Ghigoff, et al., "BMC:

Performance 103

Performance Latency Cache Virtualization 103

Highly Scalable

AUGUST 20, 2013

This article is an effort to explore techniques used by developers of in-stream data processing systems, trace the connections of these techniques to massive batch processing and OLTP/OLAP databases, and discuss how one unified query engine can support in-stream, batch, and OLAP processing at the same time. Modularity and flexibility.

Big Data 154

Big Data Processing Lambda Database 154

John McCalpin

APRIL 25, 2023

For most high-end processors these values have remained in the range of 75% to 85% of the peak DRAM bandwidth of the system over the past 15-20 years — an amazing accomplishment given the increase in core count (with its associated cache coherence issues), number of DRAM channels, and ever-increasing pipelining of the DRAMs themselves.

Benchmarking 97

Benchmarking Cache Latency Tuning 97

The Morning Paper

FEBRUARY 20, 2020

An extended version of SQL Server, with an integrated ONNX Runtime engine executes the query. By using state-of-the-art relational and ML engines, Raven can also leverage the large body of work in relational and ML inference optimization. A runtime code generator creates a SQL query incorporating all of these optimisations.

Processing 72

Processing Hardware Database Servers 72

Percona

SEPTEMBER 1, 2023

This results in expedited query execution, reduced resource utilization, and more efficient exploitation of the available hardware resources. This not only enhances performance but also enables you to make more efficient use of your hardware resources, potentially resulting in cost savings on infrastructure.

Tuning 52

Tuning Database Performance Hardware 52

ACM Sigarch

FEBRUARY 23, 2018

Engineers, like economists, deal with large amounts of data and pride ourselves on our clinical ability to analyze and solve complex problems. One of the premises expounded upon ( link ) is that engineering/computer science does not appeal to young women and they choose other careers. Hence the lack of women in our field.

Architecture 48

Architecture Cache Hardware Virtualization 48

Percona

JANUARY 17, 2019

On multi-core machines – which is the majority of the hardware nowadays – and in the cloud, we have multiple cores available for use. Aurora Parallel Query response time (for queries which can not use indexes) can be 5x-10x better compared to the non-parallel fully cached operations. The second and third run used the cached data.

Cache 71

Cache C++ AWS Airlines 71

Brendan Gregg

AUGUST 18, 2019

bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set. BPF has been extended (aka eBPF) in recent years for providing a safe way to extend kernel functionality, and has become a hot topic in systems engineering, with at least 24 talks on BPF at the last Linux Plumber's conference.

Latency 57

Latency C++ Cache Programming 57

Abhishek Tiwari

DECEMBER 27, 2017

Apache Arrow's in-memory columnar layout is specifically optimized for data locality for better performance on modern hardware like CPUs and GPUs. In contrast, Alluxio a middleware for data access - think Alluxio storage layer as fast cache. Leveraging the recent hardware advances.

Big Data 49

Big Data Artificial Intelligence Storage Hardware 49

HammerDB

APRIL 19, 2023

From this data, it can be argued that HammerDB is a better candidate to test MySQL database engine and CPU performance. By default, HammerDB is designed to take advantage of database system caching mechanisms such as buffer caches, query caches, or statement caches. cpu_utilization_%_in_kernel_mode 29.70

Performance 55

Performance Benchmarking Cache Storage 55

SQL Server According to Bob

JUNE 3, 2016

My development collogues and I are starting a regular blog series, outlining the vast range of scalability improvements, allowing SQL Server 2016 to run across a wide array of hardware configurations, faster and better than previous releases of SQL Server. ” – Bob Dorr, Principle Engineer SQL Server Support. Auto-soft NUMA.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

The Morning Paper

SEPTEMBER 19, 2019

AliGraph covers Alibaba’s distributed graph engine supporting the development of new GNN applications. It handles an order of magnitude more throughput than a prototype built on a stream processing engine. Could it be Analyzing efficient stream processing on modern hardware ? for machine generated emails sent to humans).

Blockchain 46

Blockchain Hardware Google Speed 46

Alex Russell

OCTOBER 22, 2017

We get a strong sense for how bad site performance is going to be based on the percentage of engineering leads, PMs, and decision makers carrying high-end phones which they primarily use in urban areas. NOTE: This discussion is sure to infuriate competent network engineers. Partner meetings are illuminating. seconds: 400 Kbps = 50KB/s.

Performance 74

Performance Network Benchmarking Mobile 74

Smashing Magazine

JUNE 18, 2020

Both of these problems can be avoided by wrapping your widgets in a SafeArea widget, which is a particular kind of padding widget which makes sure your widgets fall into a place where they can actually be displayed without anything impeding the users’ ability to see them, be it a hardware or software constraint. In React Native.

Storage 103

Storage Mobile Website Java 103

SQL Performance

JUNE 21, 2019

While hardware such as intelligent SANs, Solid State Disk, and other advancements have helped speed things up, wasted space in index can translate to wasted space in the buffer pool as well as wasting more I/O. The engine takes care of placing logical processors from the same physical core into different soft-NUMA nodes.

Servers 49

Servers Azure Hardware Database 49

SQL Server According to Bob

JUNE 3, 2016

Ryan Stonecipher – Principle SQL Server Software Engineer. Bob Dorr – Principal SQL Server Escalation Engineer. On the same hardware/machine repeat steps 1 thru 3 using an instance of SQL Server 2016 CTP 3.0 DEMO – It Just Runs: DBCC CheckDB. Paste the script below in a new query window. or newer release.

Hardware 40

Hardware Servers Cache Software Engineering 40

Abhishek Tiwari

DECEMBER 13, 2017

More importantly, if this works out well, this could lead to a radical improvement in performance by leveraging hardware trends such as GPUs and TPUs. Their result is particularly promising for specialized index structures termed as learned indexes which has potential to replace B-Trees without major re-engineering. Learned indexes.

Artificial Intelligence 40

Artificial Intelligence Hardware Google Benchmarking 40

Randon ASCII

AUGUST 16, 2018

It turns out that v8 (Chrome’s JavaScript engine) has CodeRange objects for managing code-gen, and each CodeRange object is constrained to a 128 MiB address range. The CFG memory block is best thought of a cache with bounded size. And my VAllocStress program hung for the duration of the scan! Root-cause. Well, that’s not quite true.

Programming 75

Programming Virtualization Code Processing 75

Dotcom-Montior

JUNE 15, 2020

The censorship and monitoring of internet have evolved from anti-virus-like and firewall software to hardware security patches for all devices that uses internet. Search engines must be specially designed with search results that are compliant to existing Chinese laws on internet security and bandwidth control.

Monitoring 52

Monitoring Performance Artificial Intelligence Internet 52

Brendan Gregg

FEBRUARY 28, 2023

link] , 2021 [Trader 21] Tiffany Trader, “Cerebras Second-Gen 7nm Wafer Scale Engine Doubles AI Performance Over First-Gen Chip ,” [link] , Apr 2021 [Ghigoff 21] Yoann Ghigoff, et al.,

Performance 52

Performance Latency Cache Virtualization 52