2 Part.

Added script yaml_to_redis
Added redis storage
Web-service work with yaml and redis

Dockerfile

+FROM redis
+COPY redis.conf /usr/local/etc/redis/redis.conf
+CMD [ "redis-server", "/usr/local/etc/redis/redis.conf" ]
+
+FROM python:3.9
+RUN mkdir -p /usr/src/app/
+WORKDIR /usr/src/app/
+COPY . /usr/src/app/
+RUN pip install --no-cache-dir -r requirements.txt
+EXPOSE 8000
+CMD ["python", "main.py"]
\ No newline at end of file

from_yml_to_redis.py

+from lib.yaml_lib import YamlManager
+from lib.libs import Config
+
+from pathlib import Path
+import redis
+
+conf = Config(Path("pref.json"))
+yaml_manager = YamlManager(path=Path('data', conf.name_yaml_bd))
+
+redis_cli = redis.Redis(host=conf.redis_host, port=conf.redis_port, db=conf.redis_db)
+
+
+def export_data():
+    try:
+        for i in yaml_manager.read():
+            redis_cli.set(name=i['short_link'], value=i['full_link'])
+            print(f"Successfully added key: {i['short_link']} value: {i['full_link']}")
+    except Exception as e:
+        print(f'Error: {e}')
+    finally:
+        redis_cli.close()
+
+
+export_data()

lib/libs.py

@@ -12,9 +12,15 @@ class Config:
             js = json.loads(f.read())
             storage = js['storage']
             name_yaml_bd = js['name_yaml_bd']
+            redis_host = js['redis_host']
+            redis_port = js['redis_port']
+            redis_db = js['redis_db']
 
         self.storage = storage
         self.name_yaml_bd = name_yaml_bd
+        self.redis_host = redis_host
+        self.redis_port = redis_port
+        self.redis_db = redis_db
 
 
 class LinkGenerator:

lib/redis_lib.py

+import redis
+
+
+class RedisManager:
+    def __init__(self, host='localhost', port=6379, db=0):
+        self._host = host
+        self._port = port
+        self._db = db
+
+    def __enter__(self):
+        """ Opening connection with Redis"""
+        self._redis_cli = redis.Redis(host=self._host, port=self._port, db=self._db)
+        return self
+
+    def key_exists(self, key):
+        """Returns TRUE if key exists"""
+        if self._redis_cli.exists(key) == 1:
+            return True
+        else:
+            return False
+
+    def save(self, key, value):
+        try:
+            self._redis_cli.set(name=key, value=value)
+        except Exception as e:
+            print(f'Error: {e}')
+
+    def get_by_key(self, key):
+        """Return value by key"""
+        try:
+            return self._redis_cli.get(key).decode('UTF-8')
+        except Exception as e:
+            print(e)
+            return None
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        """ Closing the connection """
+        self._redis_cli.close()
+        if exc_val:
+            raise

main.py

 from pathlib import Path
+import uvicorn
 from fastapi import FastAPI
 from starlette.responses import RedirectResponse
 
 from lib.libs import Config
-from lib.yaml_manager import YamlManager
+from lib.yaml_lib import YamlManager
+from lib.redis_lib import RedisManager
 
 conf = Config(Path("pref.json"))
-
-path_to_yaml_db = Path("data", conf.name_yaml_bd)
-
-yaml = YamlManager(path=path_to_yaml_db)
+yaml_manager = YamlManager(path=Path("data", conf.name_yaml_bd))
 
 app = FastAPI()
 
@@ -17,8 +16,18 @@ app = FastAPI()
 @app.get("/{shorted_link}")
 async def short_link(shorted_link: str):
     if conf.storage == 'yaml':
-        key = yaml.get_by_key(shorted_link)
+        key = yaml_manager.get_by_key(shorted_link)
         if key:
             return RedirectResponse(url=key)
-        else:
+
+    if conf.storage == 'redis':
+        with RedisManager(host=conf.redis_host, port=conf.redis_port, db=conf.redis_db) as t:
+            key = t.key_exists(shorted_link)
+            if key:
+                return RedirectResponse(url=t.get_by_key(shorted_link))
+
     return '404 Not found'
+
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=8000)

pref.json

 {
-  "storage": "yaml",
-  "name_yaml_bd": "db.yaml"
+  "storage": "redis",
+  "name_yaml_bd": "db.yaml",
+  "redis_host"  : "localhost",
+  "redis_port"  : 6379,
+  "redis_db"    : 0
 }

requirements.txt

@@ -3,3 +3,4 @@ fastapi==0.68.1
 uvicorn==0.15.0
 starlette~=0.14.2
 pathlib~=1.0.1
+redis~=3.5.3
\ No newline at end of file