phoenix/litellm
1
0
Fork 0
forked from phoenix/litellm-mirror
Code Pull requests Activity
litellm/docs/my-website/docs/proxy/reliability.md

426 lines
11 KiB
Markdown
Raw Blame History

import Image from '@theme/IdealImage';
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# 🔥 Fallbacks, Retries, Timeouts, Load Balancing
Retry call with multiple instances of the same model.
If a call fails after num_retries, fall back to another model group.
If the error is a context window exceeded error, fall back to a larger model group (if given).
[**See Code**](https://github.com/BerriAI/litellm/blob/main/litellm/router.py)
## Quick Start - Load Balancing
### Step 1 - Set deployments on config
**Example config below**. Here requests with `model=gpt-3.5-turbo` will be routed across multiple instances of `azure/gpt-3.5-turbo`
```yaml
model_list:
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/<your-deployment-name>
api_base: <your-azure-endpoint>
api_key: <your-azure-api-key>
rpm: 6 # Rate limit for this deployment: in requests per minute (rpm)
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/gpt-turbo-small-ca
api_base: https://my-endpoint-canada-berri992.openai.azure.com/
api_key: <your-azure-api-key>
rpm: 6
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/gpt-turbo-large
api_base: https://openai-france-1234.openai.azure.com/
api_key: <your-azure-api-key>
rpm: 1440
```
### Step 2: Start Proxy with config
```shell
$ litellm --config /path/to/config.yaml
```
### Step 3: Use proxy - Call a model group [Load Balancing]
Curl Command
```shell
curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--data ' {
"model": "gpt-3.5-turbo",
"messages": [
{
"role": "user",
"content": "what llm are you"
}
],
}
'
```
### Usage - Call a specific model deployment
If you want to call a specific model defined in the `config.yaml`, you can call the `litellm_params: model`
In this example it will call `azure/gpt-turbo-small-ca`. Defined in the config on Step 1
```bash
curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--data ' {
"model": "azure/gpt-turbo-small-ca",
"messages": [
{
"role": "user",
"content": "what llm are you"
}
],
}
'
```
## Fallbacks + Retries + Timeouts + Cooldowns
**Set via config**
```yaml
model_list:
- model_name: zephyr-beta
litellm_params:
model: huggingface/HuggingFaceH4/zephyr-7b-beta
api_base: http://0.0.0.0:8001
- model_name: zephyr-beta
litellm_params:
model: huggingface/HuggingFaceH4/zephyr-7b-beta
api_base: http://0.0.0.0:8002
- model_name: zephyr-beta
litellm_params:
model: huggingface/HuggingFaceH4/zephyr-7b-beta
api_base: http://0.0.0.0:8003
- model_name: gpt-3.5-turbo
litellm_params:
model: gpt-3.5-turbo
api_key: <my-openai-key>
- model_name: gpt-3.5-turbo-16k
litellm_params:
model: gpt-3.5-turbo-16k
api_key: <my-openai-key>
litellm_settings:
num_retries: 3 # retry call 3 times on each model_name (e.g. zephyr-beta)
request_timeout: 10 # raise Timeout error if call takes longer than 10s. Sets litellm.request_timeout
fallbacks: [{"zephyr-beta": ["gpt-3.5-turbo"]}] # fallback to gpt-3.5-turbo if call fails num_retries
context_window_fallbacks: [{"zephyr-beta": ["gpt-3.5-turbo-16k"]}, {"gpt-3.5-turbo": ["gpt-3.5-turbo-16k"]}] # fallback to gpt-3.5-turbo-16k if context window error
allowed_fails: 3 # cooldown model if it fails > 1 call in a minute.
```
**Set dynamically**
```bash
curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--data ' {
"model": "zephyr-beta",
"messages": [
{
"role": "user",
"content": "what llm are you"
}
],
"fallbacks": [{"zephyr-beta": ["gpt-3.5-turbo"]}],
"context_window_fallbacks": [{"zephyr-beta": ["gpt-3.5-turbo"]}],
"num_retries": 2,
"timeout": 10
}
'
```
### Test it!
```bash
curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--data-raw '{
"model": "zephyr-beta", # 👈 MODEL NAME to fallback from
"messages": [
{"role": "user", "content": "what color is red"}
],
"mock_testing_fallbacks": true
}'
```
## Advanced - Context Window Fallbacks (Pre-Call Checks + Fallbacks)
**Before call is made** check if a call is within model context window with **`enable_pre_call_checks: true`**.
[**See Code**](https://github.com/BerriAI/litellm/blob/c9e6b05cfb20dfb17272218e2555d6b496c47f6f/litellm/router.py#L2163)
**1. Setup config**
For azure deployments, set the base model. Pick the base model from [this list](https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json), all the azure models start with azure/.
<Tabs>
<TabItem value="same-group" label="Same Group">
Filter older instances of a model (e.g. gpt-3.5-turbo) with smaller context windows
```yaml
router_settings:
enable_pre_call_checks: true # 1. Enable pre-call checks
model_list:
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/chatgpt-v-2
api_base: os.environ/AZURE_API_BASE
api_key: os.environ/AZURE_API_KEY
api_version: "2023-07-01-preview"
model_info:
base_model: azure/gpt-4-1106-preview # 2. 👈 (azure-only) SET BASE MODEL
- model_name: gpt-3.5-turbo
litellm_params:
model: gpt-3.5-turbo-1106
api_key: os.environ/OPENAI_API_KEY
```
**2. Start proxy**
```bash
litellm --config /path/to/config.yaml
# RUNNING on http://0.0.0.0:4000
```
**3. Test it!**
```python
import openai
client = openai.OpenAI(
api_key="anything",
base_url="http://0.0.0.0:4000"
)
text = "What is the meaning of 42?" * 5000
# request sent to model set on litellm proxy, `litellm --model`
response = client.chat.completions.create(
model="gpt-3.5-turbo",
messages = [
{"role": "system", "content": text},
{"role": "user", "content": "Who was Alexander?"},
],
)
print(response)
```
</TabItem>
<TabItem value="different-group" label="Context Window Fallbacks (Different Groups)">
Fallback to larger models if current model is too small.
```yaml
router_settings:
enable_pre_call_checks: true # 1. Enable pre-call checks
model_list:
- model_name: gpt-3.5-turbo-small
litellm_params:
model: azure/chatgpt-v-2
api_base: os.environ/AZURE_API_BASE
api_key: os.environ/AZURE_API_KEY
api_version: "2023-07-01-preview"
model_info:
base_model: azure/gpt-4-1106-preview # 2. 👈 (azure-only) SET BASE MODEL
- model_name: gpt-3.5-turbo-large
litellm_params:
model: gpt-3.5-turbo-1106
api_key: os.environ/OPENAI_API_KEY
- model_name: claude-opus
litellm_params:
model: claude-3-opus-20240229
api_key: os.environ/ANTHROPIC_API_KEY
litellm_settings:
context_window_fallbacks: [{"gpt-3.5-turbo-small": ["gpt-3.5-turbo-large", "claude-opus"]}]
```
**2. Start proxy**
```bash
litellm --config /path/to/config.yaml
# RUNNING on http://0.0.0.0:4000
```
**3. Test it!**
```python
import openai
client = openai.OpenAI(
api_key="anything",
base_url="http://0.0.0.0:4000"
)
text = "What is the meaning of 42?" * 5000
# request sent to model set on litellm proxy, `litellm --model`
response = client.chat.completions.create(
model="gpt-3.5-turbo",
messages = [
{"role": "system", "content": text},
{"role": "user", "content": "Who was Alexander?"},
],
)
print(response)
```
</TabItem>
</Tabs>
## Advanced - EU-Region Filtering (Pre-Call Checks)
**Before call is made** check if a call is within model context window with **`enable_pre_call_checks: true`**.
Set 'region_name' of deployment.
**Note:** LiteLLM can automatically infer region_name for Vertex AI, Bedrock, and IBM WatsonxAI based on your litellm params. For Azure, set `litellm.enable_preview = True`.
**1. Set Config**
```yaml
router_settings:
enable_pre_call_checks: true # 1. Enable pre-call checks
model_list:
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/chatgpt-v-2
api_base: os.environ/AZURE_API_BASE
api_key: os.environ/AZURE_API_KEY
api_version: "2023-07-01-preview"
region_name: "eu" # 👈 SET EU-REGION
- model_name: gpt-3.5-turbo
litellm_params:
model: gpt-3.5-turbo-1106
api_key: os.environ/OPENAI_API_KEY
- model_name: gemini-pro
litellm_params:
model: vertex_ai/gemini-pro-1.5
vertex_project: adroit-crow-1234
vertex_location: us-east1 # 👈 AUTOMATICALLY INFERS 'region_name'
```
**2. Start proxy**
```bash
litellm --config /path/to/config.yaml
# RUNNING on http://0.0.0.0:4000
```
**3. Test it!**
```python
import openai
client = openai.OpenAI(
api_key="anything",
base_url="http://0.0.0.0:4000"
)
# request sent to model set on litellm proxy, `litellm --model`
response = client.chat.completions.with_raw_response.create(
model="gpt-3.5-turbo",
messages = [{"role": "user", "content": "Who was Alexander?"}]
)
print(response)
print(f"response.headers.get('x-litellm-model-api-base')")
```
## Advanced - Custom Timeouts, Stream Timeouts - Per Model
For each model you can set `timeout` & `stream_timeout` under `litellm_params`
```yaml
model_list:
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/gpt-turbo-small-eu
api_base: https://my-endpoint-europe-berri-992.openai.azure.com/
api_key: <your-key>
timeout: 0.1 # timeout in (seconds)
stream_timeout: 0.01 # timeout for stream requests (seconds)
max_retries: 5
- model_name: gpt-3.5-turbo
litellm_params:
model: azure/gpt-turbo-small-ca
api_base: https://my-endpoint-canada-berri992.openai.azure.com/
api_key:
timeout: 0.1 # timeout in (seconds)
stream_timeout: 0.01 # timeout for stream requests (seconds)
max_retries: 5
```
#### Start Proxy
```shell
$ litellm --config /path/to/config.yaml
```
## Advanced - Setting Dynamic Timeouts - Per Request
LiteLLM Proxy supports setting a `timeout` per request
**Example Usage**
<Tabs>
<TabItem value="Curl" label="Curl Request">
```shell
curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--data-raw '{
"model": "gpt-3.5-turbo",
"messages": [
{"role": "user", "content": "what color is red"}
],
"logit_bias": {12481: 100},
"timeout": 1
}'
```
</TabItem>
<TabItem value="openai" label="OpenAI v1.0.0+">
```python
import openai
client = openai.OpenAI(
api_key="anything",
base_url="http://0.0.0.0:4000"
)
response = client.chat.completions.create(
model="gpt-3.5-turbo",
messages=[
{"role": "user", "content": "what color is red"}
],
logit_bias={12481: 100},
timeout=1
)
print(response)
```
</TabItem>
</Tabs>
View git blame Copy permalink