I currently working on a Linux embedded application where I do some logging every second for numeric data (I really just need to plot data on a graph for the last 24 hours of operations).
Since SD cards degrade quickly, I am looking for a database that can store data in memory and only really persist on occasion (maybe on demand?). In this way, I am hoping to prolong the lifespan of the SD card. I came across Graphite, but apparently it cannot store data in memory. Any advice?