Best of 2017

The blog posts Hacker News loved most in 2017. 4,763 posts.

Any topic
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%…