A complete guide to MongoDB in Rust with the mongodb crate — connections and clients, CRUD with typed collections, filters and projections, aggregation pipelines, transactions, indexes, Change Streams for real-time data, GridFS, and the repository pattern.
A complete guide to Elasticsearch in Rust with the elasticsearch crate — connections and index management, indexing documents, full-text search with match and multi_match, filters and bool queries, aggregation, highlighting, pagination with search_after, and database sync patterns.