Scalegrid

JULY 29, 2020

PgBouncer defines one pool per user+database combination. A client benefits from a pooled connection only if it connects to a child which has previously served a connection for this database+user combination. PgBouncer allows limiting connections per-pool, per-database, per-user or per-client. When are connections reused?

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

Percona

JULY 20, 2023

It is very common to see many infrastructure layers standing between a PostgreSQL database and the Application server. At Percona Support, we use pg_gather as the method to collect and study the wait events because it is a standalone SQL script and doesn’t need to install anything on the database systems.

Network 63

Network Performance Latency Servers 63

Scalegrid

FEBRUARY 8, 2024

At its core, a distributed storage system comprises three main components: a controller for managing the system’s operations, an internal datastore where information is held, and databases geared towards ensuring scalability, partitioning capabilities, and high availability for all types of data.

Storage 130

Storage Systems Big Data Azure 130

The Morning Paper

SEPTEMBER 1, 2019

IPA: invariant-preserving applications for weakly consistent replicated databases Balegas et al., Our insight is that in many situations the effects to restore the database integrity can be applied preventively alongside the original operations, repairing the invariant violation automatically in a conflicting execution. VLDB’19.

Database 42

Database Latency Games Design 42

Dynatrace

MARCH 17, 2021

A single OneAgent instance can handle the monitoring of many types of entities, including servers, applications, services, databases, and more. You want to optimize your Citrix landscape with insights into user load and screen latency per server? Your SAP instance is slow, and you don’t know which transactions or users are affected?

Metrics 169

Metrics Monitoring Network Technology 169

Percona

MARCH 23, 2023

These guidelines work well for a wide range of applications, though the optimal settings, of course, depend on the workload. Hardware Memory The amount of RAM to be provisioned for database servers can vary greatly depending on the size of the database and the specific requirements of the company. Benchmark before you decide.

Performance 126

Performance Hardware Tuning Storage 126

The Morning Paper

FEBRUARY 6, 2020

Oh, and there’s a scheduler too of course to keep all the plates spinning. On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network.

Serverless 98

Serverless Lambda Cache Latency 98

The Morning Paper

JANUARY 28, 2020

In databases you probably know it as stored procedures. Shredder is " a low-latency multi-tenant cloud store that allows small units of computation to be performed directly within storage nodes. " " Running end-user compute inside the datastore is not without its challenges of course.

Serverless 99

Serverless Storage Latency Cloud 99

Percona

JULY 17, 2023

MongoDB Community Edition software might set the stage for achieving your high-volume database goals, but you quickly learn that its features fall short of your enterprise needs. The popularity of MongoDB MongoDB has emerged as a popular database platform. 5 among all database management systems and No. It ranks No.

Open Source 76

Open Source Database Scalability Software 76

Dotcom-Montior

MAY 12, 2020

They now allow users to interact more with the company in the form of online forms, shopping carts, Content Management Systems (CMS), online courses, etc. Network latency. Database connectivity. Network Latency. Network latency can be affected due to. Database Connectivity. The list goes on and on.

Monitoring 63

Monitoring Entertainment Hardware Latency 63

Percona

MAY 15, 2023

The main reason behind this is that MySQL is a relational database system (RDBMS), and any data that is going to be written in it must respect the RDBMS rules. This, of course, is unless I can organize my products by country as well, which is a bit unusual nowadays but not impossible. The POC Why this POC?

Traffic 124

Traffic Scalability Database Servers 124

Dynatrace

JUNE 25, 2021

Distributed tracing describes the act of following a transaction through all participating applications (tiers) and sub-systems, such as databases. Of course, Dynatrace supports W3C Trace Context as well. Distributed computing didn’t start with the rise of microservices. In this case the trace is preserved with no broken link.

Open Source 199

Open Source Monitoring Google Systems 199

The Morning Paper

OCTOBER 26, 2020

It’s limited by the laws of physics in terms of end-to-end latency. federated machine learning and federated database management systems) seems a reasonable way of describing what’s going on here. We saw earlier that there is end-user pressure to replace batch systems with much lower latency online systems.

Cloud 104

Cloud Big Data Latency Architecture 104

The Morning Paper

JUNE 23, 2019

Coupled with stateless application servers to execute business logic and a database-like system to provide persistent storage, they form a core component of popular data center service archictectures. The network latency of fetching data over the network, even considering fast data center networks. Who knew! ;). From RInK to LInK.

Cache 79

Cache Latency Google Lambda 79

n0derunner

SEPTEMBER 17, 2018

It is very common to have large resource-hungry databases separated across nodes using anti-affinity rules. In such a case we have a Bandwidth heavy workload profile (reporting) sharing with a Latency Sensitive workload (transactional). The key thing to observe is the impact on the latency sensitive (OLTP) workload.

Performance Testing 40

Performance Testing Benchmarking Testing Performance 40

Particular Software

JUNE 3, 2019

From Udi Dahan's Advanced Distributed Systems Design Course , Day 1 Problem of scale The real problem with bandwidth is not one of absolute speed but one of scale. Disks, including those used by our databases, have bandwidth limitations as well. Today, we have DSL and cable modems; tomorrow, fiber may be widespread.

Latency 40

Latency Speed Network Strategy 40

Alex Russell

MAY 9, 2022

This is a complex topic, but to borrow from a recent post , web performance expands access to information and services by reducing latency and variance across interactions in a session, with a particular focus on the tail of the distribution (P75+). Consistent performance matters just as much as low average latency. What's the problem?

Performance 86

Performance Latency Metrics Engineering 86

Dotcom-Montior

DECEMBER 8, 2021

We are kidding of course, but you know something is bad if happens that early in the morning. The IT service catalog is typically a database or resource that an organization creates to provide users with information on their operational services and offerings. Nothing good happens at 2:00 a.m., What is Incident Management?

Social Media 90

Social Media Monitoring Latency DevOps 90

The Morning Paper

JANUARY 26, 2020

If the server-side responder is also being replayed, then Reverb inserts a new request into the server-side log… When the response is generated, Reverb buffers it and uses a model of network latency to determine where to inject the response into the client-side log.

Programming 86

Programming Servers Network Latency 86

The Morning Paper

FEBRUARY 23, 2020

How’s that going to work given what we know about the throughput and latency of blockchains, and the associated mining costs?" " And the answer of course, is the by now familiar move of keeping most of this off of the blockchain using off-chain protocols ( state channels ).

Blockchain 94

Blockchain Internet Internet IoT 94

Alex Russell

MARCH 6, 2021

Not as much as we'd like, of course, but the worldwide baseline has changed enormously. There are differences, of course, but not where it counts. Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. Talk about a hard target. I'm happy to report that it has.

Performance 124

Performance Network Cache Metrics 124

SQL Performance

APRIL 8, 2019

Both of these Intel processors are special bespoke models that are not in the Intel ARK database. Of course, if I were buying an AMD-based server for on-premises SQL Server use right now, I would try to get the newer, frequency-optimized AMD EPYC 7371 processor. GHz Intel Xeon E5-2673 v4 (Broadwell) and the 2.4 Memory (GiB).

Azure 42

Azure Virtualization Storage Benchmarking 42

The Morning Paper

SEPTEMBER 12, 2019

Declarative recursive computation on an RDBMS… or, why you should use a database for distributed machine learing Jankov et al., Machine learning inside a relational database has been done before, most notably in the form of MADlib , which was integrated into Greenplum during my time at Pivotal. VLDB’19.

Network 44

Network Database Programming Hardware 44

All Things Distributed

NOVEMBER 19, 2010

Big news this week was of course the launch of Cluster GPU instances for Amazon EC2. Understanding Throughput-Oriented Architectures - background article in CACM on massively parallel and throughput vs latency oriented architectures. a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications.

AWS 67

AWS Cloud Benchmarking Storage 67

Alex Russell

JUNE 20, 2020

built-in relational SQL database engines. Rendering text is important (think login screens), but there's no product without low-latency, adaptive codecs, networking, and camera/microphone access. The a secondary benefit to adjacency is that it provides time to learn and course-correct. high-color image raster. floppy/CD/DVD).

Hardware 55

Hardware Games Java Media 55

The Netflix TechBlog

MAY 14, 2021

Once you finally find useful identifiers, you may begin writing SQL queries against your production database to find out what went wrong. It enables a Production Office Coordinator to keep a Production’s cast, crew, and vendors organized and up to date with the latest information throughout the course of a title’s filming.

Traffic 160

Traffic Latency Java Google 160

Smashing Magazine

JANUARY 7, 2019

Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Of course, your data might show that your customers are not on these devices, but perhaps they simply don’t show up in your analytics because your service is inaccessible to them due to slow performance.

Performance 104

Performance Cache Metrics Network 104

Smashing Magazine

JANUARY 6, 2020

This might be very different for your company, of course, but that’s a close enough approximation of a majority of customers out there. Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Thanks to Tim Kadlec, Henri Helvetica and Alex Russel for the pointers!

Performance 145

Performance Cache Network Metrics 145

Alex Russell

APRIL 29, 2021

For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. It of course is personally frustrating to not be able to deliver these improvement for developers who wish to reach iOS users — which is all developers. Offscreen Canvas. TextEncoderStream & TextDecoderStream.

Media 145

Media Games Education Engineering 145

Highly Scalable

MAY 1, 2012

This approach often leads to heavyweight high-latency analytical processes and poor applicability to realtime use cases. If all the bits of the corresponding signature are ones then the answer is yes (with a certain probability, of course). A Liner-Time Probabilistic Counting Algorithm for Database Applications. References.

Analytics 191

Analytics Traffic Big Data Efficiency 191

All Things Distributed

JUNE 21, 2017

As we said at the time, DynamoDB was a result of 15 years of learning in the area of large scale non-relational databases and cloud services. Based on this experience and learning, we built DynamoDB to be a fast, highly scalable NoSQL database to meet the needs of Internet-scale applications. Fully managed cache for DynamoDB.

Speed 121

Speed Cache Latency AWS 121

All Things Distributed

OCTOBER 2, 2017

Today marks the 10 year anniversary of Amazon's Dynamo whitepaper , a milestone that made me reflect on how much innovation has occurred in the area of databases over the last decade and a good reminder on why taking a customer obsessed approach to solving hard problems can have lasting impact beyond your original expectations.

Internet 128

Internet Internet AWS Performance 128