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Measures the per-command redis hot path: bindStart runs command.toUpperCase, the config filter, the per-connection service cache, then formatCommand to build the redis.raw_command string and startSpan. Variants cover the common short command (get), per-arg truncation (a value past MAX_ARG_LENGTH), the wide-arg loop that hits MAX_COMMAND_LENGTH (mset with many pairs), and a mixed rotation of get/set/hset.