Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,763 posts.

Any topic
2017
2581

.NET Core Image Processing

Image processing, and in particular image resizing, is a common requirement for web applications. As such, I wanted to paint a panorama of the options that exist for .NET Core to process images. For each option, I’ll give a code sample for image resizing, and I’ll outline interesting features. I’ll conclude with a…

2587

Storage engine design

In time-series databases the querying pattern differs from the write pattern. We usually write data in time order by updating many series every second. But querying is a different story. We usually want to read only a handful of series leaving most of the data behind. Here lies the biggest problem, which is we don’t…

2590

Using cgroups to limit I/O

Developers running their apps on tsuru can choose plans based on memory and cpu usage. We were looking at adding I/O usage as one of the plan’s features, so one could choose how many I/O operations per second or bytes per second a container may be able to read/write. Being able to limit I/O is particulary important…

2593

Request for Education Startups

At YC, we’re deeply interested in education because of its power to transform lives and societies and to maximize human potential. On a micro level, we believe technology can help reverse the trend in K-12 of spending more and more money to achieve the same learning outcomes. We believe tech can also create…

2602

Disable transparent hugepages

tl;dr “Transparent Hugepages” is a Linux kernel feature intended to improve performance by making more efficient use of your processor’s memory-mapping hardware. It is enabled ("enabled=always") by default in most Linux distributions. Transparent Hugepages gives some applications a small performance improvement (~ 10%…