An alternative to SCAN for key pattern searches in databases like Redis is the KEYS command, which can quickly return all keys matching a specific pattern. However, KEYS is not recommended for large datasets due to performance issues, as it blocks the database while searching. Another option is SSCAN, which works well with sets and allows for more efficient, incremental searches. You could also consider using ZSCAN for sorted sets or HSCAN for hash fields, depending on the data structure in use. These commands provide non-blocking, scalable searches over large datasets.