Examples of redis.clients.jedis.Jedis.keys()

redis.clients.jedis.Jedis.keys()
Returns all the keys matching the glob-style pattern as space separated strings. For example if you have in the database the keys "foo" and "foobar" the command "KEYS foo*" will return "foo foobar".
Note that while the time complexity for this operation is O(n) the constant times are pretty low. For example Redis running on an entry level laptop can scan a 1 million keys database in 40 milliseconds. Still it's better to consider this one of the slow commands that may ruin the DB performance if not used with care.
In other words this command is intended only for debugging and special operations like creating a script to change the DB schema. Don't use it in your normal code. Use Redis Sets in order to group together a subset of objects.
Glob style patterns examples:
- h?llo will match hello hallo hhllo
- h*llo will match hllo heeeello
- h[ae]llo will match hello and hallo, but not hillo
Use \ to escape special chars if you want to match them verbatim.
Time complexity: O(n) (with n being the number of keys in the DB, and assuming keys and pattern of limited length) @param pattern @return Multi bulk reply

      return false;
    }


    boolean success = false;
    try {
      Set<String> keys = jedis.keys(repository.name + ":*");
      if (keys.size() > 0) {
        Transaction t = jedis.multi();
        t.del(keys.toArray(new String[keys.size()]));
        t.exec();
      }

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      return false;
    }


    boolean success = false;
    try {
      Set<String> oldKeys = jedis.keys(oldRepository.name + ":*");
      Transaction t = jedis.multi();
      for (String oldKey : oldKeys) {
        String newKey = newRepository.name + oldKey.substring(oldKey.indexOf(':'));
        t.rename(oldKey, newKey);
      }

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  @Override
  public Set<Long> getIds(RepositoryModel repository) {
    Set<Long> ids = new TreeSet<Long>();
    Jedis jedis = pool.getResource();
    try {// account for migrated tickets
      Set<String> keys = jedis.keys(key(repository, KeyType.journal, "*"));
      for (String tkey : keys) {
        // {repo}:journal:{id}
        String id = tkey.split(":")[2];
        long ticketId = Long.parseLong(id);
        ids.add(ticketId);

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    if (jedis == null) {
      return list;
    }
    try {
      // Deserialize each journal, build the ticket, and optionally filter
      Set<String> keys = jedis.keys(key(repository, KeyType.journal, "*"));
      for (String key : keys) {
        // {repo}:journal:{id}
        String id = key.split(":")[2];
        long ticketId = Long.parseLong(id);
        List<Change> changes = getJournal(jedis, repository, ticketId);

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      return false;
    }


    boolean success = false;
    try {
      Set<String> keys = jedis.keys(repository.name + ":*");
      if (keys.size() > 0) {
        Transaction t = jedis.multi();
        t.del(keys.toArray(new String[keys.size()]));
        t.exec();
      }

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      return false;
    }


    boolean success = false;
    try {
      Set<String> oldKeys = jedis.keys(oldRepository.name + ":*");
      Transaction t = jedis.multi();
      for (String oldKey : oldKeys) {
        String newKey = newRepository.name + oldKey.substring(oldKey.indexOf(':'));
        t.rename(oldKey, newKey);
      }

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      return key;
   }


   public static void list(String p) {
      Jedis jedis = new Jedis(redisConfig);
      Set<String> keys = jedis.keys(p);
      if (!keys.isEmpty()) {
         List<String> values = jedis.mget(keys.toArray(new String[keys.size()]));
         renderJSON(new HashSet<String>(values));
      } else {
         notFound();

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      }
   }


   public static void migrate() {
      Jedis jedis = new Jedis(redisConfig);
      Set<String> keys = jedis.keys("url#*");
      for (String oldkey : keys) {
         String url = jedis.get(oldkey);
         newUrl(url, jedis);
         jedis.del(oldkey);
      }

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   }


   public static Integer count() {
      response.accessControl("*", "GET", true);
      Jedis jedis = new Jedis(redisConfig);
      Set<String> keys = jedis.keys("fromkey:*");
      return keys.size();
   }


   public static void clean() {
      Jedis jedis = new Jedis(redisConfig);

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      return keys.size();
   }


   public static void clean() {
      Jedis jedis = new Jedis(redisConfig);
      Set<String> keys = jedis.keys("fromkey:*");
      List<String> deletedKeys = new ArrayList<String>();
      for (String key : keys) {
         if (!isValidUrl(jedis.get(key)) || !isReachableUrl(jedis.get(key))) {
            deletedKeys.add(jedis.get(key));
            jedis.del("count:" + jedis.get("fromurl:" + jedis.get(key)));

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