31
Topics /
Databases & Data
The most popular blog posts about databases & data on Hacker News. 130 posts.
32
Damn Cool Algorithms: Cardinality Estimation
Posted by Nick Johnson | Filed under python , cardinality-estimation , damn-cool-algorithms
33
Probabilistic Data Structures For Web Analytics And Data Mining
Statistical analysis and mining of huge multi-terabyte data sets is a common task nowadays, especially in the areas like web analytics and Internet advertising. Analysis of such large data sets oft…
34
NoSQL Data Modeling Techniques
NoSQL databases are often compared by various non-functional criteria, such as scalability, performance, and consistency. This aspect of NoSQL is well-studied both in practice and theory because sp…
35
EC2 I/O
SentinelOne unifies AI-powered endpoint, cloud, identity, and data protection—enhanced by our Security Data Lake for seamless and efficient cybersecurity.
36
37
38
39
40
41
42
Using python and k-means to find dominant colors in images
I'm working on a little photography website for my Dad and thought it would be neat to extract color information from photographs. I tried a couple of different approaches before finding one that works pretty well. This approach uses k-means clustering to cluster the pixels in groups based on their color. The center…
43
In-memory key-value store in C, Go and Python
"Coder's paternity leave turns into polyglot key-value store adventure"
44
45
RethinkDB 1.3 is out, now available on OS X
We’ve released RethinkDB 1.3 ( Metropolis ) which has a large number of enhancements, and adds support for OS X and several other platforms. As of the 1.3 release, the server can now be installed on the following platforms:
46
47
48
PostgreSQL when it is not your job
( Note beforehand: I didn’t get everything. You really also have to look at his slides for the details. Thanks Christophe for posting the slides right afterwards !)
49
50
MapReduce Patterns, Algorithms, and Use Cases
In this article I digested a number of MapReduce patterns and algorithms to give a systematic view of the different techniques that can be found on the web or scientific articles. Several practical…
51
52
Understanding Postgres Performance
Update theres a more recent post that expands further on where to start optimizing specific queries, and of course if you want to dig into optimizing your infrastructure High Performance PostgreSQL is still a great read For many application developers their database is a black box. Data goes in, comes back out and in…
53
54
Relational shell programming
Unix is a bestiary of ad hoc databases: comma-, colon-, tab- and space-separated tables. Think of /etc/* or /var/log/* , or of columnar commands.
55
Building a MongoDB Clone in Postgres
I had a crazy thought. Don't all good ideas start with that phrase? Well, this one was suitably crazy: why not build my own version of MongoDB right on top of Postgres? It sounds a little far-fetched, but in all honesty it's pretty simple.
56
57
58
Lying with pictures: Smartphone manufacturer share by OS
As steer and drplokta pointed out yesterday , the Nielsen diagram was grossly out of proportion, so it looked like RIM and MS were better than they were. I passed the data to steer, who then played around with R (code is in the other post), and produced the second diagram. I've tried to line them…
59
60
