Percona

AUGUST 31, 2018

Out of the box, the default PostgreSQL configuration is not tuned for any particular workload. It is primarily the responsibility of the database administrator or developer to tune PostgreSQL according to their system’s workload. This parameter sets how much dedicated memory will be used by PostgreSQL for cache. wal_buffers.

Tuning 55

Tuning Database Performance Benchmarking 55

Percona

FEBRUARY 15, 2023

Tuning In terms of tuning, two parameters can be tuned, the size of the bitmap and the number of bits set by every value. For good performance, the filter blocks are cached in the RocksDB block cache and normally stay there since they are accessed frequently. Download Percona Distribution for MySQL Today

Storage 127

Storage Tuning Cache Engineering 127

Percona

MARCH 27, 2023

having to open each table.frm (and in which my test runs, I have purposely read a very high number of tables compared to “Table-open-cache” variable). When running only sysbench, there is a high number of cache hits (~99.98%) and a low number of “misses,” which means the table_cache is big enough for the workload.

Cache 101

Cache Hardware Servers Benchmarking 101

Smashing Magazine

NOVEMBER 8, 2021

On top of this foundation, we add layers of caching, prerendering and edge delivery optimizations — not the other way around. Surveying the existing landscape of available developer tools and runtimes, we felt that there is a gap. Stay tuned for more in 2022! Large preview ).

Cache 136

Cache Best Practices Strategy Servers 136

Percona

JULY 27, 2023

MySQL previously released software quarterly as part of a continuous delivery system where new features were made available. This could be handy for tracking query tuning and performance auditing. releases will become available, please have a little patience. This is a Quick Peek at what Oracle delivered with MySQL 8.0.34

Servers 82

Servers Open Source Tuning Cache 82

Alex Russell

MARCH 31, 2022

Browsers will cache tools popular among vocal, leading-edge developers. There's plenty of space for caching most popular frameworks. The best available proxy data also suggests that shared caches would have a minimal positive effect on performance. Suppose a user has only downloaded part of the cache.

Cache 82

Cache Government Traffic Network 82

Tim Kadlec

APRIL 12, 2020

The cache hit was very low (a topic for another day), and whenever the server had to provide a fresh version of the page, it was taking an unacceptably long time more often than not. Synthetic tests, even properly tuned to match device and network characteristics, only occasionally surfaced the issue.

Tuning 69

Tuning Cache Network Servers 69

The Netflix TechBlog

OCTOBER 15, 2019

caching (Memcached etc.), High availability, via standby instances across AWS Availability Zones. Historically, message publishing at Netflix is optimized for availability instead of durability (see a previous blog ). In Keystone Kafka clusters, unclean leader election is usually enabled to favor producer availability.

Transportation 192

Transportation Architecture Processing Storage 192

Smashing Magazine

MARCH 19, 2021

Gael Metais suggested to more aggressively subset web fonts and look into caching issues with our AVIF files. If a browser doesn’t support AVIF, it gets a JPEG file (properly cached), The content negotiation happens via <picture> + srcset in the browser. Smashing Podcast: Tune In And Get Inspired.

Mobile 140

Mobile Design Cache Code 140

Percona

APRIL 24, 2023

Indexes are generally considered to be the panacea when it comes to SQL performance tuning, and PostgreSQL supports different types of indexes catering to different use cases. I keep seeing many articles and talks on “tuning” discussing how creating new indexes speeds up SQL but rarely ones discussing removing them.

Tuning 125

Tuning Cache Storage Database 125

Smashing Magazine

APRIL 11, 2022

However, developers with a deep understanding of the project may want to improve performance beyond that by doing some fine-tuning under the hood. We can use the preload attribute for the HTML link element to optimize loading performance by ensuring that the browser discovers the resource earlier, downloads it, and caches it.

Media 70

Media Tuning Metrics Google 70

Percona

APRIL 7, 2023

If we were to select the most important MySQL setting, if we were given a freshly installed MySQL or Percona Server for MySQL and could only tune a single MySQL variable, which one would it be? MySQL comes pre-configured to be conservative instead of making the most of the resources available in the server. Why is that?

Tuning 135

Tuning Cache Servers Benchmarking 135

The Netflix TechBlog

JUNE 14, 2023

The GraphQL shim enabled client engineers to move quickly onto GraphQL, figure out client-side concerns like cache normalization, experiment with different GraphQL clients, and investigate client performance without being blocked by server-side migrations. To launch Phase 1 safely, we used AB Testing. How does it work?

Traffic 353

Traffic Latency Cache Metrics 353

Scalegrid

DECEMBER 19, 2019

Once the authentication succeeds: PgBouncer checks for a cached connection, with the same username+database combination. If a cached connection is found, it returns the connection to the client. PgBouncer, while a great connection pooler, does not support automated load balancing or high-availability. And that is it!

Cache 246

Cache Architecture Database Servers 246

Percona

MARCH 23, 2023

By caching hot datasets, indexes, and ongoing changes, InnoDB can provide faster response times and utilize disk IO in a much more optimal way. Typically a good value is 70%-80% of available memory. If you see concurrency issues, you can tune this variable. Static) – Requires MySQL restart for change. I hope this helps!

Performance 124

Performance Hardware Tuning Storage 124

The Netflix TechBlog

JULY 1, 2019

While web browsers and mobile phones have gigabytes of memory available for graphics, our devices are constrained to mere MBs. 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. The majority of legacy devices run at 28MB of surface cache.

Cache 166

Cache Design Testing Development 166

The Netflix TechBlog

JULY 21, 2022

More importantly, the low resource availability or “out of memory” scenario is one of the common reasons for crashes/kills. Some features (as an example) include Device Type ID, SDK Version, Buffer Sizes, Cache Capacities, UI resolution, Chipset Manufacturer and Brand. Labeling the data?—?Ground of the time (False Positives).

Big Data 179

Big Data Cache Engineering Data Engineering 179

Percona

APRIL 17, 2023

The main objective of this post is to share my experience over the past years tuning MongoDB and centralize the diverse sources that I crossed in this journey in a unique place. There is an issue with this, which causes the OS to swap even with memory available. Spoiler alert: This post focuses on MongoDB 3.6.X 25.84 - Total 21.04

Best Practices 52

Best Practices Design Tuning Database 52

Dynatrace

JULY 16, 2020

This would also mean I need a service that detects any new environments, creates API tokens for them, refreshes API tokens on expiry and ensures that there is always a valid API token available. TenantCache: a cache to store tenant information and API token information and semi-permanent data to avoid unnecessary roundtrips. ?

Cache 234

Cache Serverless Efficiency Tuning 234

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Cache Access Pattern Depending on the memory access pattern and working set size, an additional 1% to 10% overhead can occur at a certain syscall rate. and 4.14.12

Performance 75

Performance Benchmarking Cache Tuning 75

IO River

NOVEMBER 2, 2023

‍A CDN, or Content Delivery Network, is a network of servers strategically positioned across various locations to expedite content delivery to users based on their geographic location.These patterns split into two main forms of traffic:Static Traffic: When a user request targets static content, the CDN first checks its cache.

Traffic 52

Traffic Cache Servers Latency 52

Dynatrace

NOVEMBER 13, 2020

By adding Flutter support, we’re giving you more freedom to choose what best fits your use case and available resources. Be sure to fine-tune the anomaly detection settings for your mobile app so that you can focus on those anomalies that are most relevant to the experience of your end users. What’s next.

Code 173

Code Mobile Monitoring Infrastructure 173

Rigor

SEPTEMBER 3, 2019

There are many tools available that can help you monitor, manage, and optimize your website and application performance: APM, synthetics, RUM, alerting, alert integrations, and more. Security holes in your site open you to exploit, which could not only compromise your customers’ data but also impact your performance and availability.

Website 74

Website Cache Ecommerce Traffic 74

IO River

NOVEMBER 2, 2023

A CDN, or Content Delivery Network, is a network of servers strategically positioned across various locations to expedite content delivery to users based on their geographic location.These patterns split into two main forms of traffic:Static Traffic: When a user request targets static content, the CDN first checks its cache.

Traffic 40

Traffic Cache Network Servers 40

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Providing high availability for real-time events. Some of DBLog’s features are: Processes captured log events in-order.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Providing high availability for real-time events. High Availability DBLog uses active-passive architecture. Figure 3?—?DBLog

Database 197

Database Traffic Transportation Open Source 197

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Cache Access Pattern Depending on the memory access pattern and working set size, an additional 1% to 10% overhead can occur at a certain syscall rate. and 4.14.12

Performance 40

Performance Benchmarking Cache Tuning 40

The Morning Paper

MARCH 17, 2020

One thing they all had in common is an evaluation using some kind of simulation of the expected behaviour of NVDIMMs, because the real thing wasn’t yet available. The Optane DIMM is the first scalable, commercially available NVDIMM. Use non-temporal stores for large transfers, and control cache evictions. But now it is!

Scalability 59

Scalability Latency Cache Media 59

SQL Performance

APRIL 27, 2020

Hyperscale achieves high performance from each compute node having SSD-based caches which helps minimize the network round trips to fetch data. There is a lot of awesome technology involved with Hyperscale in how it is architected to use SSD-based caches and page servers. There is also the ability to configure an autopause delay.

Azure 55

Azure Database Serverless Hardware 55

All Things Distributed

OCTOBER 2, 2017

We were pushing the limits of what was a leading commercial database at the time and were unable to sustain the availability, scalability and performance needs that our growing Amazon business demanded. Durable and Highly-Available – DynamoDB maintains data durability and 99.99

Internet 128

Internet Internet AWS Performance 128

Smashing Magazine

SEPTEMBER 6, 2021

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. As such, a micro-optimization is, again, how you probably need to fine-tune things on a low level to really benefit from it.

Network 105

Network Servers Cache Traffic 105

SQL Server According to Bob

JANUARY 11, 2020

Stable media is commonly physical disk storage, but other devices and certain caching facilities qualify as well. Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations. This cache is often supported by a battery-powered backup facility.

Servers 40

Servers Cache Media Hardware 40

Enprowess

MARCH 4, 2018

Basically when group of servers and other resources act like a single system and enable high availability is termed as “Clustering”. Enable cluster link for cache replication. 4) Enabling cluster link: By enabling cluster link it automatically activates distributed caching. Users can tune these settings for their needs.

Cache 52

Cache Transportation Media Traffic 52

Dynatrace

JUNE 18, 2019

Instrumenting multi-dex apps sometimes required advanced manual fine-tuning. Moreover, features like Instant Run and the Gradle Build Cache weren’t supported. Out-of-the-box support for Instant Run and the Gradle Build Cache make the auto-instrumentation process barely noticeable. No multi-dex issues. Supportability.

Cache 27

Cache Java Monitoring Tuning 27

Smashing Magazine

AUGUST 22, 2021

Additionally, even if we knew the available physical bandwidth, that wouldn’t mean we could use all of it ourselves. Several users are typically active on a network concurrently, each of whom need a fair share of the available bandwidth. More in-depth information is available. What Does It All Mean?

Performance 106

Performance Network Latency Servers 106

Smashing Magazine

JUNE 26, 2020

The flex-grow property with its value of 1 ensures all images expand to fill any available space, while flex-basis makes sure these flex items start from a minimum of 640px; header svg { flex-grow: 1; flex-basis: 640px; } header svg:not(:last-of-type) { margin-right: 2rem; }. This modular grid is comprised of three columns and rows.

Design 95

Design Media C++ Energy 95

Speed Curve

DECEMBER 25, 2013

Source: Guy Podjarny However, we do now have a full set of techniques to effectively deliver highly performative sites that not only visually scale across devices but also deliver code and assets tuned to the width of a device. All CMS's should be offering this level of image manipulation and caching.

Performance 60

Performance Mobile Website Benchmarking 60