input: Write a function to optimize a Flask application for efficient performance. The function should improve the performance by using Redis for caching, uWSGI for Python applications, gunicorn as a WSGI server, Flask-Compress extension for compression, global variables where applicable, model methods instead of direct SQL queries, query parameters in URLs instead of plain parameters, and thread-local objects for performance. If the Flask application is already optimized, return True; otherwise, return False.
  assert optimize_flask_app() == True
output: def optimize_flask_app():
      # Check for Redis caching
      if 'redis' not in app.extensions:
          return False
      
      # Check for uWSGI
      if 'uwsgi' not in app.config:
          return False
      
      # Check for gunicorn
      if 'gunicorn' not in app.config:
          return False
      
      # Check for Flask-Compress
      if 'compress' not in app.extensions:
          return False
      
      # Check for global variables
      if not hasattr(app, 'global_var'):
          return False
      
      # Check for model methods instead of direct SQL queries
      if 'direct_sql_query' in app.config:
          return False
      
      # Check for query parameters in URLs
      if 'plain_parameters' in app.config:
          return False
      
      # Check for thread-local objects
      if 'thread_local' not in app.config:
          return False
      
      return True