Logstash is a part of the ELK (Elasticsearch — Kibana — Logstash) stack, from Elastic. Its a centralized log drain for all your logs from various sources.
I couldn’t find any nice tutorials on setting up Logstash on a DigitalOcean droplet, and sending logs to it from a Heroku Rails…
Adjusting stock prices for dividends and splits is a common problem.
The following links illustrate methodologies used by various data providers.
The idea is to send a .prn file generated using these instructions to the printer directly. Do this by hooking the printer into CUPS,and use the CUPS -raw option to send your file to the printer, via command line, like this:
lpr -P TSC_TE244 -o…
The paper illustrates a method to prepare hemolyzed controls using EDTA samples from routine laboratory patients.
Self-made controls (n = 2) were prepared using fresh EDTA blood. EDTA blood, 120 g/L, artificially…
Elasticsearch is construed primarily as a search engine and log consumption system.
Most people advocate using something like MySQL/PostgreSQL/Mongo as the primary database and Es as an indexing backend.
ES can however, be used as a database, obviating the need for a primary database, altogether.
The motivation behind this is…