I'm not sure you read the article fully, because relationships were never described in the article. Instead, it was high read/update load which caused problems.
Mongo, on paper, should be an ideal candidate for this job; but, due to complications with the locking model and with its inability to do online compactions, it's failing.
Mongo, on paper, should be an ideal candidate for this job; but, due to complications with the locking model and with its inability to do online compactions, it's failing.