<ul><li>Firestore is a powerful NoSQL database from Firebase that provides real-time data synchronization and scalability.</li><li>Best practices include understanding Firestore's query model, indexing for efficient queries, optimizing query performance, leveraging real-time updates, and using aggregations and batching.</li><li>Queries should be carefully structured, necessary indexes should be created, pagination should be implemented with query cursors, and expensive queries should be minimized through data modeling and incremental queries.</li><li>Real-time updates can be optimized by using listeners on specific documents and fetching relevant data with where and orderBy clauses.</li></ul>

Optimizing Firestore Queries for Large-Scale Applications

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