rrdb | Round robin database , similar to rdb

rrdb is a C library. rrdb has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Data manipulation - store and retreive round robin data. Maintain transformations (xforms) i.e. average, sum, count etc. Can be run as command or as pipe mode (for inet server). For example, imagine we wish to keep the average phone call queue duration in Asterisk. We would initialize our database file as follows: rrdb --command=create --dir=/data/rrd --filename=test.rrdb --setcount=1 --samplecount=500 --xform=RRDBCOUNT:ONEDAY:RRDBMEAN:ONEDAY:0. This creates a single db file, for one set of data (in this example for call queue duration). We could create it to include other params we want are interested in also. The xform param creates extra columns which store the values - count for the period and average value for that period and column. When a phone call is answered, Asterisk would run the command: rrdb --command=update --dir=/data/rrd --filename=test.rrdb --value=12. Then, probably in a web app, to get the data to render a graph for example: rrdb --command=fetch --dir=/data/rrd --filename=test.rrdb --xform=0. Which would return: 1494604800:1. or: rrdb --command=fetch --dir=/data/rrd --filename=test.rrdb 1494606092.19696:12.