diff --git a/.deploy/deploy-dev.yaml b/.deploy/deploy-dev.yaml
index 6429b86..bc645d4 100644
--- a/.deploy/deploy-dev.yaml
+++ b/.deploy/deploy-dev.yaml
@@ -7,6 +7,8 @@ services:
     image: mathwave/sprint-repo:pizda-bot
     environment:
       TELEGRAM_TOKEN: $TELEGRAM_TOKEN_DEV
+      MONGO_HOST: "mongo.develop.sprinthub.ru"
+      MONGO_PASSWORD: $MONGO_PASSWORD_DEV
     deploy:
       mode: replicated
       restart_policy:
diff --git a/.deploy/deploy-prod.yaml b/.deploy/deploy-prod.yaml
index 2d5b519..7c8f733 100644
--- a/.deploy/deploy-prod.yaml
+++ b/.deploy/deploy-prod.yaml
@@ -7,6 +7,8 @@ services:
     image: mathwave/sprint-repo:pizda-bot
     environment:
       TELEGRAM_TOKEN: $TELEGRAM_TOKEN_PROD
+      MONGO_HOST: "mongo.sprinthub.ru"
+      MONGO_PASSWORD: $MONGO_PASSWORD_PROD
     deploy:
       mode: replicated
       restart_policy:
diff --git a/main.py b/main.py
index 322c811..96b63b9 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,12 @@
 import os
+from random import randrange
 
 import telebot
+from cachetools import TTLCache
 from telebot.types import Message
 
+import settings
+from mongo import mongo
 
 bot = telebot.TeleBot(os.getenv("TELEGRAM_TOKEN"))
 
@@ -14,21 +18,78 @@ answers_net_rus = {"нет", "нeт"}
 answers_net_eng = {"net", "nеt"}
 
 
+cache = TTLCache(settings.CACHE_SIZE, settings.CACHE_TTL)
+
+
+def get_chat_info(chat_id: int) -> dict:
+    cached_info = cache.get(chat_id)
+    if cached_info is not None:
+        return cached_info
+    mongo_info = mongo.chats_collection.find_one({"chat_id": chat_id})
+    if mongo_info is not None:
+        cache[chat_id] = mongo_info
+        return mongo_info
+    chat_info = {"chat_id": chat_id, "state": "default", "probability": 100}
+    mongo.chats_collection.insert_one(chat_info)
+    cache[chat_id] = chat_info
+    return chat_info
+
+
+def set_values(chat_id: int, **values):
+    cached_info = cache.get(chat_id)
+    if cached_info is None:
+        mongo_info = mongo.chats_collection.find_one({"chat_id": chat_id})
+        if mongo_info is None:
+            chat_info = {"chat_id": chat_id, "state": "default", "probability": 100}
+            chat_info.update(values)
+            mongo.chats_collection.insert_one(chat_info)
+            cache[chat_id] = chat_info
+        else:
+            mongo.chats_collection.update_one({"chat_id": chat_id}, {"$set": values})
+            mongo_info = dict(mongo_info)
+            mongo_info.update(values)
+            cache[chat_id] = mongo_info
+    else:
+        cached_info.update(values)
+        mongo.chats_collection.update_one({"chat_id": chat_id}, {"$set": values})
+
+
+@bot.message_handler(commands=['setprobability'])
+def set_probability(message: Message):
+    bot.send_message(message.chat.id, "Отправь одно число - вероятность парирования")
+    set_values(message.chat.id, state="set_probability")
+
+
 @bot.message_handler()
 def do_action(message: Message):
+    info = get_chat_info(message.chat.id)
+    if info['state'] == "set_probability":
+        try:
+            value = int(message.text)
+            if value < 0 or value > 100:
+                bot.reply_to(message, "Число не попадает в диапозон от 0 до 100!")
+            else:
+                set_values(message.chat.id, probability=value, state="default")
+                bot.reply_to(message, "Ок! Установил")
+        except ValueError:
+            bot.reply_to(message, "Это не число!")
+        return
     convert_text = ''.join([letter for letter in message.text if letter in all_letters]).lower().split()
     if len(convert_text) > 0:
         convert_text = convert_text[-1]
     else:
         return
+    ans = None
     if convert_text in answers_rus:
-        bot.reply_to(message, "Пизда!")
+        ans = "Пизда!"
     if convert_text in answers_eng:
-        bot.reply_to(message, "Pizda!")
+        ans = "Pizda!"
     if convert_text in answers_net_rus:
-        bot.reply_to(message, "Пидора ответ!")
+        ans = "Пидора ответ!"
     if convert_text in answers_net_eng:
-        bot.reply_to(message, "Pidora otvet!")
+        ans = "Pidora otvet!"
+    if ans is not None and randrange(1, 101) <= info["probability"]:
+        bot.reply_to(message, ans)
 
 
 bot.polling()
diff --git a/mongo.py b/mongo.py
new file mode 100644
index 0000000..6b0c991
--- /dev/null
+++ b/mongo.py
@@ -0,0 +1,25 @@
+from functools import cached_property
+
+import pymongo
+
+import settings
+
+
+class Mongo:
+    def __init__(self):
+        url = f"mongodb://{settings.MONGO_USER}:{settings.MONGO_PASSWORD}@{settings.MONGO_HOST}:27017/"
+        self.client = pymongo.MongoClient(url)
+        self.database = self.client.get_database("pizda-bot")
+        self.chats_collection.create_index([
+            ("chat_id", 1)
+        ])
+
+    def __getitem__(self, item):
+        return self.database.get_collection(item)
+
+    @cached_property
+    def chats_collection(self):
+        return self["chats"]
+
+
+mongo = Mongo()
diff --git a/requirements.txt b/requirements.txt
index 323155b..9a5a349 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,9 @@
+cachetools==5.2.0
 certifi==2022.12.7
 charset-normalizer==2.1.1
+dnspython==2.2.1
 idna==3.4
+pymongo==4.3.3
 pyTelegramBotAPI==4.1.1
 requests==2.28.1
 urllib3==1.26.13
diff --git a/settings.py b/settings.py
new file mode 100644
index 0000000..9fa7f48
--- /dev/null
+++ b/settings.py
@@ -0,0 +1,10 @@
+import os
+import sys
+import zoneinfo
+
+MONGO_USER = os.getenv("MONGO_USER", "mongo")
+MONGO_PASSWORD = os.getenv("MONGO_PASSWORD", "password")
+MONGO_HOST = os.getenv("MONGO_HOST", "localhost")
+
+CACHE_SIZE = int(os.getenv("CACHE_SIZE", 1000))
+CACHE_TTL = int(os.getenv("CACHE_TTL", 3600))