diff --git a/core/cache_config.py b/core/cache_config.py
index 9fbd97fb..b0c12a00 100644
--- a/core/cache_config.py
+++ b/core/cache_config.py
@@ -47,3 +47,8 @@ SUBSCRIPTION_HANDLER_CONCURRENCY = 80
 SERVERS_CACHE_TTL_SEC = 60
 TARIFF_BY_ID_CACHE_TTL_SEC = 120
 TARIFFS_FOR_CLUSTER_CACHE_TTL_SEC = 120
+
+
+ERROR_THROTTLE_WINDOW_SEC = 60
+ERROR_THROTTLE_MAX_KEYS = 500
+ERROR_THROTTLE_MESSAGE_MAX_LEN = 120
diff --git a/database/db.py b/database/db.py
index f4e77d4a..8c885edb 100644
--- a/database/db.py
+++ b/database/db.py
@@ -11,12 +11,15 @@ from core.cache_config import UPDATE_STALE_AGE_SEC
 CONCURRENT_UPDATES_LIMIT = DB_POOL_SIZE + DB_MAX_OVERFLOW
 MAX_UPDATE_AGE_SEC = UPDATE_STALE_AGE_SEC
 
+_db_url = DATABASE_URL
 _connect_args = {}
 if USE_PGBOUNCER and "+asyncpg" in DATABASE_URL:
-    _connect_args["statement_cache_size"] = 0
+    _connect_args["prepared_statement_cache_size"] = 0
+    sep = "&" if "?" in _db_url else "?"
+    _db_url = f"{_db_url}{sep}prepared_statement_cache_size=0"
 
 engine = create_async_engine(
-    DATABASE_URL,
+    _db_url,
     echo=False,
     future=True,
     pool_size=DB_POOL_SIZE,
diff --git a/handlers/admin/clusters/cluster_manage.py b/handlers/admin/clusters/cluster_manage.py
index 842d1676..1c77ef80 100644
--- a/handlers/admin/clusters/cluster_manage.py
+++ b/handlers/admin/clusters/cluster_manage.py
@@ -9,6 +9,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from database import get_servers, update_key_expiry
 from database.models import Key, Server, Tariff
 from filters.admin import IsAdminFilter
+from middlewares.session import release_session_early
 from handlers.keys.operations import renew_key_in_cluster
 from logger import logger
 
@@ -198,7 +199,7 @@ async def handle_days_input(message: Message, state: FSMContext, session: AsyncS
                 f"✅ Время подписки продлено на <b>{days} дней</b> для <b>{affected}</b> пользователей в кластере <b>{cluster_name}</b>."
             )
         else:
-            await session.release_early()
+            await release_session_early(session)
             for key in keys:
                 new_expiry = key.expiry_time + add_ms
 
diff --git a/handlers/admin/users/users_keys.py b/handlers/admin/users/users_keys.py
index 07208b4a..7beece5b 100644
--- a/handlers/admin/users/users_keys.py
+++ b/handlers/admin/users/users_keys.py
@@ -29,6 +29,7 @@ from database import (
 )
 from database.models import Key, Server, Tariff
 from filters.admin import IsAdminFilter
+from middlewares.session import release_session_early
 from handlers.keys.operations import (
     create_key_on_cluster,
     delete_key_from_cluster,
@@ -815,7 +816,7 @@ async def handle_delete_key_confirm(
 
     if client_id:
         clusters = await get_servers(session=session)
-        await session.release_early()
+        await release_session_early(session)
 
         async def delete_key_from_servers():
             tasks = []
@@ -863,7 +864,7 @@ async def handle_delete_user_confirm(
 
     result = await session.execute(select(Key.email, Key.client_id).where(Key.tg_id == tg_id))
     key_records = result.all()
-    await session.release_early()
+    await release_session_early(session)
 
     async def delete_keys_from_servers():
         try:
@@ -1285,7 +1286,7 @@ async def handle_admin_unfreeze_subscription(
 
         await mark_key_as_unfrozen(session, record["tg_id"], client_id, new_expiry_time)
         await session.commit()
-        await session.release_early()
+        await release_session_early(session)
 
         await renew_key_in_cluster(
             cluster_id=cluster_id,
@@ -1364,7 +1365,6 @@ async def change_expiry_time(expiry_time: int, email: str, session: AsyncSession
         if not target_cluster:
             return ValueError(f"No suitable cluster found for server {server_id}")
 
-    from middlewares.session import release_session_early
     await release_session_early(session)
 
     await renew_key_in_cluster(
@@ -1753,7 +1753,7 @@ async def handle_cfg_save(callback_query: CallbackQuery, state: FSMContext, sess
         return
 
     try:
-        await session.release_early()
+        await release_session_early(session)
         await renew_key_in_cluster(
             cluster_id=key_obj.server_id,
             email=email,
diff --git a/handlers/admin/users/users_tariffs.py b/handlers/admin/users/users_tariffs.py
index a2be7ace..565868cf 100644
--- a/handlers/admin/users/users_tariffs.py
+++ b/handlers/admin/users/users_tariffs.py
@@ -13,6 +13,7 @@ from core.settings.tariffs_config import normalize_tariff_config
 from database import get_tariff_by_id
 from database.models import Key, Tariff
 from filters.admin import IsAdminFilter
+from middlewares.session import release_session_early
 from handlers.keys.operations import renew_key_in_cluster
 from logger import logger
 
@@ -333,7 +334,7 @@ async def handle_user_renew_confirm(
         )
     )
     await session.commit()
-    await session.release_early()
+    await release_session_early(session)
 
     try:
         ok = await renew_key_in_cluster(
@@ -665,7 +666,7 @@ async def handle_cfg_renew_apply(callback_query: CallbackQuery, session: AsyncSe
         )
     )
     await session.commit()
-    await session.release_early()
+    await release_session_early(session)
 
     try:
         ok = await renew_key_in_cluster(
diff --git a/handlers/coupons.py b/handlers/coupons.py
index 53a1787b..6aa219df 100644
--- a/handlers/coupons.py
+++ b/handlers/coupons.py
@@ -27,6 +27,7 @@ from database import (
     update_key_expiry,
 )
 from handlers.buttons import MAIN_MENU
+from middlewares.session import release_session_early
 from handlers.keys.operations import renew_key_in_cluster
 from handlers.payments.currency_rates import format_for_user
 from handlers.profile import process_callback_view_profile
@@ -249,7 +250,7 @@ async def handle_key_extension(
         if tariff:
             key_subgroup = tariff.get("subgroup_title")
 
-        await session.release_early()
+        await release_session_early(session)
         await renew_key_in_cluster(
             cluster_id=key.server_id,
             email=key.email,
diff --git a/handlers/keys/key_freeze.py b/handlers/keys/key_freeze.py
index a73a4acf..ea41d6b3 100644
--- a/handlers/keys/key_freeze.py
+++ b/handlers/keys/key_freeze.py
@@ -22,6 +22,7 @@ from handlers.texts import (
     UNFREEZE_SUBSCRIPTION_CONFIRM_MSG,
 )
 from handlers.utils import edit_or_send_message, handle_error
+from middlewares.session import release_session_early
 from logger import logger
 
 
@@ -102,7 +103,7 @@ async def process_callback_unfreeze_subscription_confirm(callback_query: Callbac
 
         await mark_key_as_unfrozen(session, record["tg_id"], client_id, new_expiry_time)
         await session.commit()
-        await session.release_early()
+        await release_session_early(session)
 
         max(leftover / (1000 * 86400), 0.01)
         logger.info(
diff --git a/handlers/keys/key_renew.py b/handlers/keys/key_renew.py
index d9db615c..fd1a5191 100644
--- a/handlers/keys/key_renew.py
+++ b/handlers/keys/key_renew.py
@@ -45,6 +45,7 @@ from handlers.texts import (
     get_renewal_message,
 )
 from handlers.utils import edit_or_send_message, format_discount_time_left, get_russian_month
+from middlewares.session import release_session_early
 from hooks.hook_buttons import insert_hook_buttons
 from hooks.processors import (
     process_process_callback_renew_key,
@@ -825,7 +826,7 @@ async def complete_key_renewal(
             logger.error(f"[Error] Кластер для {server_or_cluster} не найден.")
             return
 
-        await session.release_early()
+        await release_session_early(session)
         await renew_key_in_cluster(
             cluster_id=cluster_id,
             email=email,
diff --git a/handlers/keys/keys.py b/handlers/keys/keys.py
index 224517c5..8bf69301 100644
--- a/handlers/keys/keys.py
+++ b/handlers/keys/keys.py
@@ -9,6 +9,7 @@ from handlers.keys.key_view import process_callback_view_key
 from handlers.keys.operations import delete_key_from_cluster, update_subscription
 from handlers.texts import DELETE_KEY_CONFIRM_MSG, KEY_DELETED_MSG_SIMPLE
 from handlers.utils import edit_or_send_message, handle_error
+from middlewares.session import release_session_early
 from logger import logger
 
 
@@ -69,7 +70,7 @@ async def process_callback_confirm_delete(callback_query: CallbackQuery, session
             keyboard = types.InlineKeyboardMarkup(inline_keyboard=[[back_button]])
 
             await delete_key(session, client_id)
-            await session.release_early()
+            await release_session_early(session)
 
             await edit_or_send_message(
                 target_message=callback_query.message,
diff --git a/handlers/tariffs/addons/key_addons_main.py b/handlers/tariffs/addons/key_addons_main.py
index 83e286ca..10347c03 100644
--- a/handlers/tariffs/addons/key_addons_main.py
+++ b/handlers/tariffs/addons/key_addons_main.py
@@ -16,6 +16,7 @@ from handlers.buttons import (
     DOWNGRADE_CONFIRM_BUTTON_TEXT,
     PAYMENT,
 )
+from middlewares.session import release_session_early
 from handlers.keys.key_view import render_key_info
 from handlers.payments.currency_rates import format_for_user
 from handlers.payments.fast_payment_flow import try_fast_payment_flow
@@ -851,7 +852,7 @@ async def handle_addons_confirm(callback: CallbackQuery, state: FSMContext, sess
             f"old_subgroup={old_subgroup}"
         )
 
-        await session.release_early()
+        await release_session_early(session)
         await renew_key_in_cluster(
             cluster_id=server_id,
             email=email,
diff --git a/handlers/tariffs/addons/key_addons_pack.py b/handlers/tariffs/addons/key_addons_pack.py
index a96f3873..77879424 100644
--- a/handlers/tariffs/addons/key_addons_pack.py
+++ b/handlers/tariffs/addons/key_addons_pack.py
@@ -19,6 +19,7 @@ from database import (
 )
 from database.models import User
 from handlers.buttons import BACK, CONFIRM_ADDON_BUTTON_TEXT, PAYMENT
+from middlewares.session import release_session_early
 from handlers.keys.key_view import render_key_info
 from handlers.payments.currency_rates import format_for_user
 from handlers.payments.fast_payment_flow import try_fast_payment_flow
@@ -827,7 +828,7 @@ async def handle_addons_confirm(callback: CallbackQuery, state: FSMContext, sess
                 f"old_subgroup={old_subgroup}"
             )
 
-            await session.release_early()
+            await release_session_early(session)
             await renew_key_in_cluster(
                 cluster_id=server_id,
                 email=email,
diff --git a/logger.py b/logger.py
index ede5ccf3..d54acefd 100644
--- a/logger.py
+++ b/logger.py
@@ -1,6 +1,7 @@
 import logging
 import os
 import sys
+import time
 
 from datetime import timedelta
 from pathlib import Path
@@ -9,6 +10,17 @@ from loguru import logger
 
 import config as cfg
 
+try:
+    from core.cache_config import (
+        ERROR_THROTTLE_MAX_KEYS,
+        ERROR_THROTTLE_MESSAGE_MAX_LEN,
+        ERROR_THROTTLE_WINDOW_SEC,
+    )
+except ImportError:
+    ERROR_THROTTLE_WINDOW_SEC = 60
+    ERROR_THROTTLE_MAX_KEYS = 500
+    ERROR_THROTTLE_MESSAGE_MAX_LEN = 120
+
 
 LEVELS = {
     "critical": 50,
@@ -82,8 +94,49 @@ for name in (
 _EXCLUDE = {"async_api_base", "async_api", "async_api_client"}
 
 
+_error_throttle = {}
+
+
+def _error_throttle_key(record):
+    msg = record.get("message", "")
+    if isinstance(msg, str):
+        first_line = msg.split("\n")[0].strip()[:ERROR_THROTTLE_MESSAGE_MAX_LEN]
+    else:
+        first_line = str(msg)[:ERROR_THROTTLE_MESSAGE_MAX_LEN]
+    return (record.get("module", ""), record.get("function", ""), first_line)
+
+
+def _error_throttle_prune():
+    if len(_error_throttle) <= ERROR_THROTTLE_MAX_KEYS:
+        return
+    now = time.monotonic()
+    by_ts = [(v[0], k) for k, v in _error_throttle.items()]
+    by_ts.sort()
+    for _, k in by_ts[: len(_error_throttle) - ERROR_THROTTLE_MAX_KEYS]:
+        _error_throttle.pop(k, None)
+
+
 def _filter(record):
-    return record.get("name") not in _EXCLUDE and record.get("module") not in _EXCLUDE
+    if record.get("name") in _EXCLUDE or record.get("module") in _EXCLUDE:
+        return False
+    level_no = getattr(record.get("level"), "no", 20)
+    if level_no < 40:
+        return True
+    key = _error_throttle_key(record)
+    now = time.monotonic()
+    if key in _error_throttle:
+        first_ts, count = _error_throttle[key]
+        if now - first_ts < ERROR_THROTTLE_WINDOW_SEC:
+            _error_throttle[key] = (first_ts, count + 1)
+            return False
+        if count > 0:
+            suffix = f" (повторялась {count} раз за последние {int(ERROR_THROTTLE_WINDOW_SEC)} сек)"
+            record["message"] = record["message"] + suffix
+        _error_throttle[key] = (now, 0)
+    else:
+        _error_throttle_prune()
+        _error_throttle[key] = (now, 0)
+    return True
 
 
 logger.add(