shorten frequency at which we refresh the most stale posts

tasks.py

@@ -6,6 +6,7 @@ from model import Session, Account, TwitterArchive, Post, OAuthToken,\
 import libforget.twitter
 import libforget.mastodon
 from datetime import timedelta, datetime, timezone
+from time import time
 from zipfile import ZipFile
 from io import BytesIO, TextIOWrapper
 import json
@@ -64,14 +65,18 @@ def unique(fun):
 
     @wraps(fun)
     def wrapper(*args, **kwargs):
-        key = 'celery_unique_lock:{}'.format(
-            pickle.dumps((fun.__name__, args, kwargs)))
+        logging.info('Checking for dupes for unique task %s', (fun.__name__, args, kwargs))
+        key = 'celery_unique_lock:epoch1:{}:{}'.format(
+            fun.__name__, pickle.dumps((args, kwargs)))
         has_lock = False
         result = None
         try:
             if r.set(key, 1, nx=True, ex=60 * 5):
+                logging.info('No dupes for unique, running task %s', (fun.__name__, args, kwargs))
                 has_lock = True
                 result = fun(*args, **kwargs)
+            else:
+                logging.info('Unique task has a dupe, skipping %s', (fun.__name__, args, kwargs))
         finally:
             if has_lock:
                 r.delete(key)
@@ -407,12 +412,16 @@ def queue_deletes():
 @app.task
 @unique
 def refresh_account_with_oldest_post():
+    then = time()
     post = (Post.query.outerjoin(Post.author).join(Account.tokens)
             .filter(Account.backoff_until < db.func.now())
             .filter(~Account.dormant).group_by(Post).order_by(
                 db.asc(Post.updated_at)).first())
     if post:
-        refresh_account(post.author_id)
+        aid = post.author_id
+        refresh_account(aid)
+        now = time()
+        logging.info('Refreshed posts for {} for having oldest post in {}s'.format(aid, now-then))
 
 
 @app.task
@@ -456,7 +465,7 @@ def update_mastodon_instances_popularity():
 
 app.add_periodic_task(40, queue_fetch_for_most_stale_accounts)
 app.add_periodic_task(9, queue_deletes)
-app.add_periodic_task(25, refresh_account_with_oldest_post)
+app.add_periodic_task(6, refresh_account_with_oldest_post)
 app.add_periodic_task(50, refresh_account_with_longest_time_since_refresh)
 app.add_periodic_task(300, periodic_cleanup)
 app.add_periodic_task(300, update_mastodon_instances_popularity)