< 1 min readIn GraphQL, a mutation is a type of operation that allows clients to make changes to the data on the server. Mutations are typically used to create, update, or delete data in a database. They are similar to the “write” operations in a traditional REST API. Unlike queries, which only retrieve data, mutations change the…
2 min readTerminal shortcuts are an essential tool for developers, as they allow for quick and efficient navigation and manipulation of files and directories. Here are some of the top terminal shortcuts that every developer should know: Ctrl + A This shortcut moves the cursor to the beginning of the current line. Ctrl + E This shortcut…
< 1 min readIn Redis, both the “HSET” and “HMSET” commands are used to set values in a hash, but they have some differences in how they are used. The “HSET” command is used to set a single field-value pair in a hash. It takes three arguments: the key of the hash, the field name, and the value….
< 1 min readThere are several ways to use Redis for rate limiting, but one common approach is to use Redis’ built-in data structures and commands to keep track of the number of requests made by a user or IP address over a certain time period. One way to implement rate limiting is to use Redis’ INCR command…
< 1 min readRedis can be used for message queues by leveraging its support for lists and its built-in RPOPLPUSH command. Here’s an example of using Redis for message queues in Python: This example demonstrates a simple use case of Redis for message queues: a producer adds a message to a list-based queue, and a consumer retrieves and…
< 1 min readRedis can be used for real-time data processing by leveraging its support for data structures such as lists, sets, and streams, as well as its built-in Pub/Sub functionality. Here’s an example of using Redis for real-time data processing in Python: This example demonstrates a simple use case of Redis for real-time data processing: a publisher…
2 min readTo use Redis as a caching system, you can follow these steps: Install and start Redis on your server. Connect to the Redis server from your application using a Redis client library for your programming language of choice. Use the client library to set key-value pairs in Redis, with the key being the cache key…
< 1 min readIn Redis, you can use the “DEL” command to delete a set and all its associated values. The command takes one or more keys as arguments, and removes the specified keys along with all their associated values. For example, to delete a set called “myset”, you can use the following command: You can also use…
< 1 min readIn Redis, you can use the “LTRIM” command to delete all entries in a list. The command takes three arguments: the key, the start index, and the end index. To delete all entries in a list, you can set the start index to 0 and the end index to -1. This will remove all elements…
< 1 min readIn Redis, you can use the “EXPIRE” command to set an expiration time for a key, after which the key will be automatically deleted. The command takes two arguments: the key, and the number of seconds after which the key should expire. For example, to set an expiration time of 30 minutes (1800 seconds) for…
