PDF: Low Cost Video on Demand Platform Based on Open Source Software

March 9, 2016Sh*tsPF

Low Cost Video on Demand Platform Based on Open Source
Software

Jernej Rožac, Klemen Pečnik, Matevž Pogačnik
University of Ljubljana, Faculty of electrical engineering, Tržaška 25, 1000 Ljubljana
E-mail:[email protected], [email protected], [email protected]

Video on demand servers are complex, expensive and inappropriate to be used in low-budget environments.
This work proposes an approach to use an open source web server and an open source content management system as a video on demand platform for public web purposes. Pseudo-streaming over the hyper text transfer protocol is introduced with the supporting web server features. A practical implementation of the solution is provided with the extensions made to WordPress content
management system

PDF: rozaclow_costp

Two terminal-based monitoring tools

March 8, 2016Linux, MetricsPF

nload

nload is a console application which monitors network traffic and bandwidth usage in real time. It visualizes the in- and outgoing traffic using two graphs and provides additional info like the total amount of transfered data and min/max network usage.

Source: http://linux.die.net/man/1/nload

slurm08

Slurm (version 0.4.0) shows network activity for a given interface. Total uploads and downloads are shown together in text and ASCII graphics. Data updates every second by default, and the graph scrolls from left to right according to network usage.

Source: https://delightlylinux.wordpress.com/2014/06/16/slurm-network-load-monitor/

SQL query – if value is null then return 1

March 4, 2016SQLPF

The example from Stackoverflow.

SELECT  orderhed.ordernum, 
    orderhed.orderdate, 
    currrate.currencycode,  
    coalesce(currrate.currentrate, 1) as currentrate
FROM orderhed 
LEFT OUTER JOIN currrate 
    ON orderhed.company = currrate.company 
    AND orderhed.orderdate = currrate.effectivedate