On April 2, 2019 Intel Optane Persistent Memory became the first commercially available storage class memory (SCM). SCM is a storage device that sits on a memory bus; in contrast, traditional storage devices like SSD are attached to the PCIe bus. We were interested how SCM, being much closer to the
We Replaced an SSD with Storage Class Memory. Here is What We Learned.
Source: mongodb.com
The Physalia configuration store for chain replication of EBS is implemented as key-value stores maintained over a large number of these cells. They built a test harness, called SimWorld, which abstracts networking, performance, and other systems concepts. The goal of this approach is to allow developers to write distributed systems tests, including tests that simulate packet loss, server failures, corruption, and other failure cases, as unit tests in the same language as the system itself.
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In this post, we’re going to take a deeper dive into the Postgres and PostGIS internals to find out how this actually works. By the time we surface you will have a better understanding of the advanced technical capabilities and unparalleled extensibility of Postgres. You’ll also appreciate how the open philosophy of Postgres has fostered a development community whose collaboration over many years has provided powerful features that benefit numerous users.
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