How do you diagnose and optimize a slow Room query?
Tests SQLite profiling and Room optimization. Isolate the query with Database Inspector, run EXPLAIN QUERY PLAN to spot scans, then add covering indexes, rewrite joins, or use Paging3. Red flag: blindly adding indexes or switching to NoSQL without measuring.
Tests systematic SQLite debugging inside Room rather than guessing. A strong answer isolates the query with Database Inspector or logging, measures latency, then runs EXPLAIN QUERY PLAN to find full-table scans or missing indexes. Optimizations include adding covering indexes, simplifying joins or subqueries, using Paging3 or LIMIT to reduce rows fetched, and enabling WAL mode for read concurrency. Red flag: dropping Room for another store or adding indexes blindly without checking the query plan first.
Read the original → developer.android.com
- #android
- #room
- #sqlite
- #performance
- #database
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