Redis 正则扫描key并删除
2022/4/22 19:14:01
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扫描key
/** * @param key * @return * @Description: 通过Scan的方式迭代key */ public Set<String> scanKeys(String key) { if (key == null) { return null; } return redisTemplate.execute((RedisCallback<Set<String>>) connection -> { Set<String> keys = new HashSet<>(); Cursor<byte[]> cursor = connection.scan(ScanOptions.scanOptions().match(key).build()); while (cursor.hasNext()) { keys.add(new String(cursor.next())); } return keys; }); }
扫描并删除
/** * @param key * @return * @Description: 通过Scan的方式迭代key并删除 */ public Long scanAndDeleteKeys(String key) { if (key == null) { return null; } return redisTemplate.execute((RedisCallback<Long>) connection -> { List<byte[]> keys = new ArrayList<>(); Cursor<byte[]> cursor = connection.scan(ScanOptions.scanOptions().match(key).build()); while (cursor.hasNext()) { keys.add(cursor.next()); } return connection.del(keys.toArray(new byte[keys.size()][])); }); }
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