Percona

APRIL 12, 2023

Whereas many open source software offerings — like the community version of MySQL — use the GNU General Public License ( GPL ), MongoDB has been under the GNU Affero General Public License ( AGPL ) and more recently under the Server Side Public License ( SSPL ), introduced by MongoDB itself.

Open Source 83

Open Source Programming Database Servers 83

MachMetrics

DECEMBER 14, 2019

How fast is the average time to first byte (server delay)? In 2017, mobile internet usage passed desktop as the majority. How long is the average server delay? It is typically reduced via server-side optimizations, such as enabling caching and database indexes. How fast is the average page load time in 2020?

Best Practices 105

Best Practices Speed Mobile Google 105

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. This server is spending about a third of its CPU cycles just checking the time! What on Earth is Ubuntu doing that results in 30% higher CPU time!?

Speed 126

Speed Java AWS Virtualization 126

SQL Performance

AUGUST 27, 2019

On August 7, 2019, AMD finally unveiled their new 7nm EPYC 7002 Series of server processors, formerly code-named "Rome" at the AMD EPYC Horizon Event in San Francisco. This is the second generation EPYC server processor that uses the same Zen 2 architecture as the AMD Ryzen 3000 Series desktop processors.

Servers 52

Servers Benchmarking Virtualization Architecture 52

The Morning Paper

NOVEMBER 8, 2020

Back in 2017 the engineering team at Facebook had a problem. In Facebook’s implementation of NativeLoglet, seal simply sets a bit on a quorum of servers. NativeLoglet implements seal by setting a bit on a quorum of servers. Once the database was restored to five replicas, we reconfigured back. Every little helps!

Virtualization 126

Virtualization Latency Storage Systems 126

SQL Performance

JULY 16, 2019

A close monitoring of the hardware enthusiast community, including many of the most respected hardware analysts and reviewers paints an even more dire picture about Intel in the server processor space. Despite all of this, Intel is not going to lose their entire server processor business any time soon. So, what has changed my mind?

Servers 46

Servers Hardware Architecture Retail 46

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. This server is spending about a third of its CPU cycles just checking the time! What on Earth is Ubuntu doing that results in 30% higher CPU time!?

Speed 40

Speed Java AWS Virtualization 40