Can Hashtable of index (word, ) stored in redis/memcached?
Any idea why would a distributed cache not serve the purpose for accessing all tweets linked to a word.
I am not sure why and what kind of index servers we may need.
Can Hashtable of index (word, ) stored in redis/memcached?
Any idea why would a distributed cache not serve the purpose for accessing all tweets linked to a word.
I am not sure why and what kind of index servers we may need.
Thank you for reaching out. The author’s of this course will reply to this as soon as possible.
They serve different functionalites.
Redis/Memcache are responsible for serving “hot” tweets. The data stored in memory change a lot, and do not persist. We need our indexes to be relatively stable and persisitent.