use redis update buffer class

litellm/proxy/db/db_spend_update_writer.py

@@ -10,26 +10,24 @@ import os
 import time
 import traceback
 from datetime import datetime, timedelta
-from typing import Any, Optional, Union
+from typing import TYPE_CHECKING, Any, Optional, Union
 
 import litellm
 from litellm._logging import verbose_proxy_logger
-from litellm.caching import DualCache
+from litellm.caching import DualCache, RedisCache, RedisClusterCache
 from litellm.proxy._types import (
     DB_CONNECTION_ERROR_TYPES,
     Litellm_EntityType,
     LiteLLM_UserTable,
     SpendLogsPayload,
 )
-from litellm.proxy.spend_tracking.spend_tracking_utils import get_logging_payload
-from litellm.proxy.utils import (
-    PrismaClient,
-    ProxyLogging,
-    ProxyUpdateSpend,
-    _raise_failed_update_spend_exception,
-    hash_token,
-)
-from litellm.secret_managers.main import str_to_bool
+from litellm.proxy.db.redis_update_buffer import RedisUpdateBuffer
+
+if TYPE_CHECKING:
+    from litellm.proxy.utils import PrismaClient, ProxyLogging
+else:
+    PrismaClient = Any
+    ProxyLogging = Any
 
 
 class DBSpendUpdateWriter:
@@ -40,6 +38,12 @@ class DBSpendUpdateWriter:
     2. Reading increments from redis or in memory list of transactions and committing them to db
     """
 
+    def __init__(
+        self, redis_cache: Optional[Union[RedisCache, RedisClusterCache]] = None
+    ):
+        self.redis_cache = redis_cache
+        self.redis_update_buffer = RedisUpdateBuffer(redis_cache=redis_cache)
+
     @staticmethod
     async def update_database(
         # LiteLLM management object fields
@@ -61,6 +65,7 @@ class DBSpendUpdateWriter:
             prisma_client,
             user_api_key_cache,
         )
+        from litellm.proxy.utils import ProxyUpdateSpend, hash_token
 
         try:
             verbose_proxy_logger.debug(
@@ -315,6 +320,10 @@ class DBSpendUpdateWriter:
         response_cost: Optional[float],
         prisma_client: Optional[PrismaClient],
     ):
+        from litellm.proxy.spend_tracking.spend_tracking_utils import (
+            get_logging_payload,
+        )
+
         try:
             if prisma_client:
                 payload = get_logging_payload(
@@ -360,8 +369,8 @@ class DBSpendUpdateWriter:
         )
         return prisma_client
 
-    @staticmethod
-    async def db_spend_transaction_handler(
+    async def db_update_spend_transaction_handler(
+        self,
         prisma_client: PrismaClient,
         n_retry_times: int,
         proxy_logging_obj: ProxyLogging,
@@ -383,8 +392,10 @@ class DBSpendUpdateWriter:
         else:
             - Regular flow of this method
         """
-        if DBSpendUpdateWriter._should_commit_spend_updates_to_redis():
-            pass
+        if RedisUpdateBuffer._should_commit_spend_updates_to_redis():
+            await self.redis_update_buffer.store_in_memory_spend_updates_in_redis(
+                prisma_client=prisma_client,
+            )
 
         if DBSpendUpdateWriter._should_commit_spend_updates_to_db():
             await DBSpendUpdateWriter._commit_spend_updates_to_db(
@@ -395,25 +406,6 @@ class DBSpendUpdateWriter:
 
         pass
 
-    @staticmethod
-    def _should_commit_spend_updates_to_redis() -> bool:
-        """
-        Checks if the Pod should commit spend updates to Redis
-
-        This setting enables buffering database transactions in Redis
-        to improve reliability and reduce database contention
-        """
-        from litellm.proxy.proxy_server import general_settings
-
-        _use_redis_transaction_buffer: Optional[Union[bool, str]] = (
-            general_settings.get("use_redis_transaction_buffer", False)
-        )
-        if isinstance(_use_redis_transaction_buffer, str):
-            _use_redis_transaction_buffer = str_to_bool(_use_redis_transaction_buffer)
-        if _use_redis_transaction_buffer is None:
-            return False
-        return _use_redis_transaction_buffer
-
     @staticmethod
     async def _commit_spend_updates_to_redis(
         prisma_client: PrismaClient,
@@ -439,8 +431,14 @@ class DBSpendUpdateWriter:
         proxy_logging_obj: ProxyLogging,
     ):
         """
-        Commits all the spend updates to the Database
+        Commits all the spend `UPDATE` transactions to the Database
+
         """
+        from litellm.proxy.utils import (
+            ProxyUpdateSpend,
+            _raise_failed_update_spend_exception,
+        )
+
         ### UPDATE USER TABLE ###
         if len(prisma_client.user_list_transactons.keys()) > 0:
             for i in range(n_retry_times + 1):

litellm/proxy/db/redis_update_buffer.py

@@ -0,0 +1,110 @@
+"""
+Handles buffering database `UPDATE` transactions in Redis before committing them to the database
+
+This is to prevent deadlocks and improve reliability
+"""
+
+from typing import TYPE_CHECKING, Any, Dict, Optional, TypedDict, Union, cast
+
+from litellm.caching import RedisCache, RedisClusterCache
+from litellm.secret_managers.main import str_to_bool
+
+if TYPE_CHECKING:
+    from litellm.proxy.utils import PrismaClient
+else:
+    PrismaClient = Any
+
+
+class DBSpendUpdateTransactions(TypedDict):
+    user_list_transactons: Dict[str, float]
+    end_user_list_transactons: Dict[str, float]
+    key_list_transactons: Dict[str, float]
+    team_list_transactons: Dict[str, float]
+    team_member_list_transactons: Dict[str, float]
+    org_list_transactons: Dict[str, float]
+
+
+class RedisUpdateBuffer:
+    """
+    Handles buffering database `UPDATE` transactions in Redis before committing them to the database
+
+    This is to prevent deadlocks and improve reliability
+    """
+
+    def __init__(
+        self, redis_cache: Optional[Union[RedisCache, RedisClusterCache]] = None
+    ):
+        self.redis_cache = redis_cache
+
+    @staticmethod
+    def _should_commit_spend_updates_to_redis() -> bool:
+        """
+        Checks if the Pod should commit spend updates to Redis
+
+        This setting enables buffering database transactions in Redis
+        to improve reliability and reduce database contention
+        """
+        from litellm.proxy.proxy_server import general_settings
+
+        _use_redis_transaction_buffer: Optional[Union[bool, str]] = (
+            general_settings.get("use_redis_transaction_buffer", False)
+        )
+        if isinstance(_use_redis_transaction_buffer, str):
+            _use_redis_transaction_buffer = str_to_bool(_use_redis_transaction_buffer)
+        if _use_redis_transaction_buffer is None:
+            return False
+        return _use_redis_transaction_buffer
+
+    async def store_in_memory_spend_updates_in_redis(
+        self,
+        prisma_client: PrismaClient,
+    ):
+        """
+        Stores the in-memory spend updates to Redis
+
+        Each transaction is a dict stored as following:
+        - key is the entity id
+        - value is the spend amount
+
+            ```
+            {
+                "0929880201": 10,
+                "0929880202": 20,
+                "0929880203": 30,
+            }
+            ```
+        """
+        IN_MEMORY_UPDATE_TRANSACTIONS: DBSpendUpdateTransactions = (
+            DBSpendUpdateTransactions(
+                user_list_transactons=prisma_client.user_list_transactons,
+                end_user_list_transactons=prisma_client.end_user_list_transactons,
+                key_list_transactons=prisma_client.key_list_transactons,
+                team_list_transactons=prisma_client.team_list_transactons,
+                team_member_list_transactons=prisma_client.team_member_list_transactons,
+                org_list_transactons=prisma_client.org_list_transactons,
+            )
+        )
+        for key, _transactions in IN_MEMORY_UPDATE_TRANSACTIONS.items():
+            await self.increment_all_transaction_objects_in_redis(
+                key=key,
+                transactions=cast(Dict, _transactions),
+            )
+
+    async def increment_all_transaction_objects_in_redis(
+        self,
+        key: str,
+        transactions: Dict,
+    ):
+        """
+        Increments all transaction objects in Redis
+        """
+        if self.redis_cache is None:
+            return
+        for transaction_id, transaction_amount in transactions.items():
+            await self.redis_cache.async_increment(
+                key=f"{key}:{transaction_id}",
+                value=transaction_amount,
+            )
+
+    async def get_all_update_transactions_from_redis(self):
+        pass

litellm/proxy/utils.py

@@ -265,6 +265,9 @@ class ProxyLogging:
         )
         self.premium_user = premium_user
         self.service_logging_obj = ServiceLogging()
+        self.db_spend_update_writer = DBSpendUpdateWriter(
+            redis_cache=self.internal_usage_cache.dual_cache.redis_cache
+        )
 
     def startup_event(
         self,
@@ -2675,7 +2678,7 @@ async def update_spend(  # noqa: PLR0915
     spend_logs: list,
     """
     n_retry_times = 3
-    await DBSpendUpdateWriter._commit_spend_updates_to_db(
+    await proxy_logging_obj.db_spend_update_writer.db_update_spend_transaction_handler(
         prisma_client=prisma_client,
         n_retry_times=n_retry_times,
         proxy_logging_obj=proxy_logging_obj,