diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 500f8e9..3b76032 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,10 @@
+black:
+  stage: .pre
+  image: registry.gitlab.com/pipeline-components/black:latest
+  script:
+    - black --check --verbose -- .
+
+
 #Following instructions (as of 2020-04-01): https://docs.gitlab.com/ee/ci/docker/using_kaniko.html
 #Kaniko docs are here: https://github.com/GoogleContainerTools/kaniko
 #While this example shows building to multiple registries for all branches, with a few modifications
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 90f899a..2c898ae 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -8,13 +8,6 @@
     "files.associations": {
         "DockerDev": "dockerfile",
     },
-    "workbench.colorTheme": "One Dark Pro",
-    "explorer.confirmDelete": false,
-    "editor.fontFamily": "JetBrains Mono",
-    "editor.letterSpacing": 1.2,
-    "editor.fontLigatures": true,
-    "editor.wordWrap": "on",
     "python.formatting.provider": "black",
     "python.showStartPage": false,
-    "editor.fontSize": 13,
 }
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 45e4aa1..9615514 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,5 @@ fuzzywuzzy==0.18.0
 python-Levenshtein==0.12.1
 schedule==1.0.0
 mplfinance==0.12.7a5
-markdownify==0.6.5
\ No newline at end of file
+markdownify==0.6.5
+cachetools==4.2.2
\ No newline at end of file
diff --git a/symbol_router.py b/symbol_router.py
index b35183d..e34b53d 100644
--- a/symbol_router.py
+++ b/symbol_router.py
@@ -8,6 +8,7 @@ from logging import critical, debug, error, info, warning
 
 import pandas as pd
 import schedule
+from cachetools import TTLCache, cached
 from fuzzywuzzy import fuzz
 
 from cg_Crypto import cg_Crypto
@@ -30,15 +31,16 @@ class Router:
     def trending_decay(self, decay=0.5):
         """Decays the value of each trending stock by a multiplier"""
 
-        return
-        info("Decaying trending symbols.")
         if self.trending_count:
-            for key in self.trending_count.keys():
-                if self.trending_count[key] < 0.01:
+            t_copy = self.trending_count.copy()
+            for key in t_copy.keys():
+                if t_copy[key] < 0.01:
                     # This just makes sure were not keeping around keys that havent been called in a very long time.
-                    self.trending_count.pop(key, None)
+                    t_copy.pop(key, None)
                 else:
-                    self.trending_count[key] = self.trending_count[key] * decay
+                    t_copy[key] = t_copy[key] * decay
+        self.trending_count = t_copy.copy()
+        info("Decayed trending symbols.")
 
     def find_symbols(self, text: str) -> list[Symbol]:
         """Finds stock tickers starting with a dollar sign, and cryptocurrencies with two dollar signs
@@ -400,6 +402,7 @@ class Router:
 
         return replies
 
+    @cached(cache=TTLCache(maxsize=1024, ttl=600))
     def trending(self) -> str:
         """Checks APIs for trending symbols.