diff --git a/blueprints/root/modules/euroring.py b/blueprints/root/modules/euroring.py
index bf91bd6..dbdb002 100644
--- a/blueprints/root/modules/euroring.py
+++ b/blueprints/root/modules/euroring.py
@@ -1,91 +1,28 @@
 from __future__ import annotations
 
 import atexit
-import json
 import os
 import re
-import tempfile
 from time import time
 from urllib.parse import urlsplit
 
-import fcntl
 import requests
 from apscheduler.schedulers.background import BackgroundScheduler
 from apscheduler.triggers.interval import IntervalTrigger
 
-
-def _cache_dir() -> str:
-    path = os.environ.get("LAIR_CACHE_DIR", "/tmp/lair-cache")
-    os.makedirs(path, exist_ok=True)
-    return path
+from blueprints.risdeveau.modules.api.scheduler_guard import should_start_scheduler
+from blueprints.risdeveau.modules.api.shared_cache import (
+    atomic_write_json,
+    cache_file,
+    load_json_if_newer,
+)
 
 
-def _cache_file(name: str) -> str:
-    return os.path.join(_cache_dir(), f"{name}.json")
-
-
-def _atomic_write_json(path: str, payload: dict) -> None:
-    parent = os.path.dirname(path) or "."
-    fd, tmp = tempfile.mkstemp(prefix=".tmp-", dir=parent)
-    try:
-        with os.fdopen(fd, "w", encoding="utf-8") as f:
-            json.dump(payload, f, ensure_ascii=False, separators=(",", ":"))
-        os.replace(tmp, path)
-    finally:
-        try:
-            if os.path.exists(tmp):
-                os.unlink(tmp)
-        except Exception:
-            pass
-
-
-_CACHE_MTIME = 0.0
-_LOCK_FD: int | None = None
-
-
-def _load_json_if_newer(path: str, last_mtime: float) -> tuple[dict | None, float]:
-    try:
-        stat = os.stat(path)
-    except FileNotFoundError:
-        return None, last_mtime
-    except Exception:
-        return None, last_mtime
-
-    mtime = float(stat.st_mtime)
-    if mtime <= float(last_mtime):
-        return None, last_mtime
-
-    try:
-        with open(path, "r", encoding="utf-8") as f:
-            return json.load(f), mtime
-    except Exception:
-        return None, last_mtime
-
-
-def _should_start_scheduler() -> bool:
-    global _LOCK_FD
-    if _LOCK_FD is not None:
-        return True
-
-    lock_path = os.environ.get("LAIR_SCHED_LOCK", "/tmp/lair-scheduler.lock")
-    fd = os.open(lock_path, os.O_CREAT | os.O_RDWR, 0o644)
-
-    try:
-        fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
-        _LOCK_FD = fd
-        return True
-    except BlockingIOError:
-        os.close(fd)
-        return False
-    except Exception:
-        try:
-            os.close(fd)
-        finally:
-            return False
-
-
-EURORING_SOURCE_URL = "https://euroring.neocities.org/scripts/onionring-variables.js"
-EURORING_SITE_URL = "https://lair.moe"
+EURORING_SOURCE_URL = os.environ.get(
+    "EURORING_SOURCE_URL",
+    "https://euroring.neocities.org/scripts/onionring-variables.js",
+)
+EURORING_SITE_URL = os.environ.get("EURORING_SITE_URL", "https://lair.moe")
 EURORING_TIMEOUT = float(os.environ.get("EURORING_TIMEOUT", "10"))
 
 
@@ -102,8 +39,9 @@ data = {
     "last_updated": 0,
 }
 
-_IS_WRITER = _should_start_scheduler()
-_CACHE_PATH = _cache_file("webring")
+_IS_WRITER = should_start_scheduler() if data["enabled"] else False
+_CACHE_PATH = cache_file("webring")
+_CACHE_MTIME = 0.0
 
 
 def _site_key(url: str) -> tuple[str, int | None, str, str]:
@@ -127,7 +65,10 @@ def _parse_js_string_value(text: str, variable: str) -> str | None:
 
 
 def _parse_bool_value(text: str, variable: str) -> bool | None:
-    match = re.search(rf"var\s+{re.escape(variable)}\s*=\s*(true|false)\s*;", text)
+    match = re.search(
+        rf"var\s+{re.escape(variable)}\s*=\s*(true|false)\s*;",
+        text,
+    )
     if not match:
         return None
     return match.group(1) == "true"
@@ -195,7 +136,7 @@ def refresh_cache() -> None:
     if _IS_WRITER:
         return
 
-    payload, mtime = _load_json_if_newer(_CACHE_PATH, _CACHE_MTIME)
+    payload, mtime = load_json_if_newer(_CACHE_PATH, _CACHE_MTIME)
     if payload is None:
         return
 
@@ -203,10 +144,12 @@ def refresh_cache() -> None:
     _CACHE_MTIME = mtime
 
 
+
 def _persist_cache() -> None:
     if not _IS_WRITER:
         return
-    _atomic_write_json(_CACHE_PATH, data)
+    atomic_write_json(_CACHE_PATH, data)
+
 
 
 def fetch_webring() -> None: