This article highlights several recent blog posts from the MongoDB Blogroll, featuring topics such as aggregation in MongoDB, full-text search with MongoDB and Solr, and replication set internals. Rick Copeland shares his insights on aggregation in two separate parts, covering both the fundamentals and its application in Python. Derick Rethans discusses full-text search capabilities using MongoDB and Solr, while Kristina Chodorow provides a deeper dive into replica set reconfiguration as part of her Replica Sets Internals Bootcamp series.