With the code below you will scan the 1000 first object from cursor 0 SCAN 0 MATCH “foo:bar:*” COUNT 1000 In result, you will get a new cursor to recall SCAN YOUR_NEW_CURSOR MATCH “foo:bar:*” COUNT 1000 To scan 1000 next object. Then when you increase COUNT from 1000 to 10000 and retrieve data you scan … Read more
We are migrating to Booksleeve, which was developed by the people who have built StackOverflow itself. So far we had very good experiences. The money is not the issue (the cost of migration is higher than paying for the license), we’re doing it because we just don’t want to enter a business relationship with company … Read more
For those experiencing on Debian buster: Editing nano /etc/systemd/system/redis.service and adding this line below redis [Service] ExecStartPost=/bin/sh -c “echo $MAINPID > /var/run/redis/redis.pid” It suppose to look like this: [Service] Type=forking ExecStart=/usr/bin/redis-server /etc/redis/redis.conf ExecStop=/bin/kill -s TERM $MAINPID ExecStartPost=/bin/sh -c “echo $MAINPID > /var/run/redis/redis.pid” PIDFile=/run/redis/redis-server.pid then: sudo systemctl daemon-reload sudo systemctl restart redis.service Check redis.service status: sudo … Read more
Publish/subscribe is a pretty simple paradigm. Think of it like you’re running a talk show on a radio station. That’s PUBLISH. You’re hoping at least one or more people will pick up your channel to listen to your messages on the radio show (SUBSCRIBE) and maybe even do some stuff, but you’re not talking to … Read more
docker build url#ref:dir Git URLs accept context configuration in their fragment section, separated by a colon :. The first part represents the reference that Git will check out, this can be either a branch, a tag, or a commit SHA. The second part represents a subdirectory inside the repository that will be used as a … Read more
Keys is specifically noted as a command not to be run in production due to the way it works. What you need here is to create an index of your keys. Use a set for storing the key names of the pattern you want. When you add a new we key, add the name of … Read more
Who said that you should actually store anything in redis key? Empty string “” is a perfectly valid value for a redis key, and it’s a shortest possible one: > SET foo “” OK > GET foo “” > BITCOUNT foo (integer) 0
Pubsub doesn’t work that way – the message goes to all connected subscribed clients. However, you could set it up so that the channel is a notification of an update to a list. That way all clients will get the message, but only one can take the item from the list with LPOP.
the reason why Redis does not use strings as DB names but indexes is that the goal and ability of Redis databases is not to provide an outer level of dictionary: Redis dictionaries can’t scale to many dictionaries, but just to a small number (it is a tradeoff), nor we want to provide nested data … Read more
Redis is an in-memory store. It can therefore use data structures which are adapted to memory storage (allowing for fast random access). To implement dictionaries (used for the main dictionary, but also for hash and set objects, and in conjunction with a skip list for zset objects), Redis use separate chaining hash tables, whose access … Read more