About a decade ago, I tried to index the web via the Dewey Decimal System. I had a site laid out similar to Google, where you could browse sites continuously starting from a given call, but the DDS is proprietary, and those people hate anyone who uses their IP without a license. You can Google everyone they’ve shutdown – places that weren’t even libraries – for using anything similar to the DDS. I reached out to the group that manages the DDS, and was taken offline before my project even started.
With all the corporate BS lately, and people looking for alternative options, I thought I’d take a search engine old school, and we’d index like Usenet. Except with an XXX.XXX.XXX format.
My original project used sharded Redis, with append logs to disk. I chose it for its in-memory speed and key-value store. Did some calculations, and I’d have to have millions of records just to consume my entire system’s memory.
I had a lot of plans for this before getting shut down.
Now that I’m older, I’m curious if I should be using MongoDB.
What are the benefits and drawbacks of each? Which would you use? And why?
Reddis is an in memory cache. Your data will definitely get deleted from Reddis once the amount stored increases or even simply restarting the service. You need proper persistent storage as well so anything that’s not in the cache can still be retrieved, albeit slower. Personally, I think NoSQL is overhyped and would recommend Postgres instead, unless your application has some very specific requirements.