diff --git a/.gitignore b/.gitignore
index a717535898..ee266cf6c8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,3 +26,5 @@ boxes/*
 .*.swo
 .bak
 /.project
+
+OS_GOVERNANCE_DATA_CACHE
diff --git a/test-requirements.txt b/test-requirements.txt
index 4715cd1bfa..d70b9491c6 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -19,6 +19,7 @@ PyYAML>=3.10.0  # MIT
 jsonschema>=2.6.0
 os-service-types
 openstack-governance>=0.1.0
+percache>=0.3.0
 
 # For translations
 # Babel 2.4.0 is broken, fixed in 2.4.1
diff --git a/tools/www-generator.py b/tools/www-generator.py
index f07f800710..087d070013 100755
--- a/tools/www-generator.py
+++ b/tools/www-generator.py
@@ -29,6 +29,7 @@ from bs4 import BeautifulSoup
 import jinja2
 import jsonschema
 import os_service_types
+import percache
 import requests
 import yaml
 
@@ -94,6 +95,8 @@ ALL_SERIES = list(sorted(SERIES_INFO.keys()))
 
 SERIES_PAT = re.compile('^(' + '|'.join(ALL_SERIES) + ')/')
 
+cache = percache.Cache("./OS_GOVERNANCE_DATA_CACHE")
+
 
 def initialize_logging(debug, verbose):
     """Initialize the Logger."""
@@ -238,6 +241,7 @@ _URLS = [
 ]
 
 
+@cache
 def load_project_data(source_directory,
                       check_all_links=False,
                       skip_links=False,
@@ -424,6 +428,7 @@ _INFRA_REPOS_EXCEPTION = [
 ]
 
 
+@cache
 def _get_official_repos():
     """Return a tuple containing lists of all official repos.
 
@@ -552,7 +557,9 @@ def main():
     args = parse_command_line_arguments()
     logger = initialize_logging(args.debug, args.verbose)
 
+    logger.debug("getting official repos ...")
     regular_repos, infra_repos, deliverables = _get_official_repos()
+    logger.debug("loading project data ...")
     project_data = load_project_data(
         source_directory=args.source_directory,
         check_all_links=args.check_all_links,