redis in day 1 🚀

Day_01/RedisCommands.md

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+# Redis CLI Commands learnt in Day 1
+
+1. SET key value
+   ```
+   SET name Shubham
+   ```
+2. EXISTS key
+   ```
+   EXISTS name
+   ```
+3. KEYS \* - To get all the keys
+   ```
+   KEYS *
+   ```
+4. FLUSHALL - to flush all the keys
+   ```
+   FLUSHALL
+   ```
+5. DEl key - to delete a key
+   ```
+   DEL name
+   ```
+6. EXPIRE key seconds - (-1) when no expiry is set or (-2) when the key is expired
+   ```
+   EXPIRE name 10
+   ```
+7. TTL key - Time To Live
+   ```
+   TTL name
+   ```
+8. SETEX key seconds value - Set a key: value with an expiry
+   ```
+   SETEX name 10 Shubham
+   ```
+
+## Arrays
+
+9. LPUSH key element - to push an element at the start of the array
+   ```
+   LPUSH array 1
+   ```
+10. RPUSH key element - to push an element at the end of the array
+    ```
+    RPUSH array 2
+    ```
+11. LRANGE key start stop - to iterate the array
+    ```
+    LRANGE array 0 -1
+    ```
+12. LPOP key - remove an element from the left side
+    ```
+    LPOP array
+    ```
+13. RPOP key - remove an element from the right side
+    ```
+    RPOP array
+    ```
+
+## Sets
+
+14. SADD key member
+    ```
+    SADD hobbies "Computer Gaming"
+    ```
+
+## Objects
+
+15. HSET key field value - Set an Object (Hash)
+    ```
+    HSET persom name Shubham
+    ```
+16. HGET key field - Get the value of the field in the object
+    ```
+    HGET person name
+    ```
+17. HGETALL key - get all the key:values from the object
+    ```
+    HGETALL person
+    ```
+18. HDEL key field - delete a field from the object
+    ```
+    HDEL person name
+    ```
+19. HEXISTS key field - check where the field exists in the object
+    ```
+    HEXISTS person name
+    ```