Redis模糊key查询两种方式总结

1KEYS pattern

1redis> KEYS user*

1SCAN cursor [MATCH pattern] [COUNT count]

1redis> SCAN 0 MATCH user*

     @Autowired
     private StringRedisTemplate stringRedisTemplate; 

/**
     * 查找匹配的key
     *
     * @param pattern
     * @return
     */
    public List<String> scanKeysByPattern(String pattern) {
        // 获取Redis连接
        RedisConnection connection = stringRedisTemplate.getConnectionFactory().getConnection();
        try {
            ScanOptions options = ScanOptions.scanOptions().match(pattern).build();
            Cursor<byte[]> cursor = connection.scan(options);

            List<String> matchedKeys = new ArrayList<>();
            while (cursor.hasNext()) {
                byte[] keyBytes = cursor.next();
                // 反序列化为字符串
                String key = new String(keyBytes, StandardCharsets.UTF_8);
                matchedKeys.add(key);
            }

            return matchedKeys;
        }finally {
            connection.close();
        }
    }