> For the complete documentation index, see [llms.txt](https://docs.hackle.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hackle.io/en/development-guide/python/python-sdk-wsgi-init.md).

# WSGI Configuration

If you are using WSGI, you must initialize `hackle_client` after the process has been forked.

### uWSGI

```python
# Step 1: uwsgi.ini 설정
enable-threads = True


# Step 2: app.py 설정
from hackle import hackle
from uwsgidecorators import postfork

class HackleClient:
    client = None

    def init(self):
        if self.client is None:
            self.client = hackle.Client(sdk_key='YOUR_SERVER_SDK_KEY')


hackle_client = HackleClient()


# Step 3: post_fork 설정
@postfork
def post_fork(server, worker):
    hackle_client.init()


# Step 4: hackleClient 사용 시
from app import hackle_client

hackle_client.client.variation(...)
```

### gunicorn

```python
# Step 1: app.py 설정
from hackle import hackle

class HackleClient:
    client = None

    def init(self):
        if self.client is None:
            self.client = hackle.Client(sdk_key='YOUR_SERVER_SDK_KEY')


hackle_client = HackleClient()

def post_fork(server, worker):
    hackle_client.init()


# Step 2: gunicorn.conf.py 설정
from app import post_fork

post_fork = post_fork


# Step 3: hackleClient 사용 시
from app import hackle_client

hackle_client.client.variation(...)
```

### gevent Configuration

If you are changing the internal communication method to non-blocking, such as with gevent monkey patching, you need to delay the instance creation so that the instance is created at the actual call time.

```python
# step 1: gevent monkey patch
import gevent.monkey
gevent.monkey.patch_all()

# step 2: app.py wrapper function
from hackle import hackle

def hackle_wrapper():
    if 'client' not in hackle_wrapper.__dict__:
        hackle_wrapper.client = hackle.Client(sdk_key='YOUR_SERVER_SDK_KEY')
    return hackle_wrapper.client

# step 3: hackleClient 사용 시
from app import hackle_wrapper

hackle_wrapper().variation(...)
```


---

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