diff --git a/archive_query_log/monitoring/home.py b/archive_query_log/monitoring/home.py
index 2fadecc5..d2cd3c72 100644
--- a/archive_query_log/monitoring/home.py
+++ b/archive_query_log/monitoring/home.py
@@ -1,7 +1,7 @@
 from datetime import datetime
 from typing import NamedTuple, Type
 
-from elasticsearch_dsl.query import Script, Exists
+from elasticsearch_dsl.query import Script, Exists, Query, Term
 from expiringdict import ExpiringDict
 from flask import render_template, Response, make_response
 
@@ -30,11 +30,11 @@ class Progress(NamedTuple):
 DocumentType = Type[BaseDocument]
 
 _statistics_cache: dict[
-    tuple[DocumentType, tuple[str, ...]],
+    tuple[DocumentType, str],
     Statistics,
 ] = ExpiringDict(
     max_len=100,
-    max_age_seconds=30,
+    max_age_seconds=60 * 3,  # 3 minutes
 )
 
 
@@ -53,20 +53,17 @@ def _get_statistics(
         name: str,
         description: str,
         document: DocumentType,
-        required_fields: tuple[str, ...] = (),
+        filter_query: Query | None = None,
 ) -> Statistics:
-    key = (document, required_fields)
+    key = (document, repr(filter_query))
     if key in _statistics_cache:
         return _statistics_cache[key]
 
     document.index().refresh(using=config.es.client)
     stats = document.index().stats(using=config.es.client)
     search = document.search(using=config.es.client)
-    if len(required_fields) > 0:
-        query = Exists(field=required_fields[0])
-        for required_field in required_fields[1:]:
-            query &= Exists(field=required_field)
-        search = search.filter(query)
+    if filter_query is not None:
+        search = search.filter(filter_query)
     total = search.count()
     last_modified_response = (
         search
@@ -86,7 +83,7 @@ def _get_statistics(
         total=total,
         disk_size=(
             _convert_bytes(stats["_all"]["total"]["store"]["size_in_bytes"])
-            if len(required_fields) == 0 else ""
+            if filter_query is None else None
         ),
         last_modified=last_modified,
     )
@@ -95,11 +92,11 @@ def _get_statistics(
 
 
 _progress_cache: dict[
-    tuple[DocumentType, tuple[str, ...], str],
+    tuple[DocumentType, str, str],
     Progress,
 ] = ExpiringDict(
     max_len=100,
-    max_age_seconds=30,
+    max_age_seconds=60 * 1,  # 1 minute
 )
 
 
@@ -110,25 +107,22 @@ def _get_processed_progress(
         description: str,
         document: DocumentType,
         timestamp_field: str,
-        required_fields: tuple[str, ...] = (),
+        filter_query: Query | None = None,
 ) -> Progress:
-    key = (document, required_fields, timestamp_field)
+    key = (document, repr(filter_query), timestamp_field)
     if key in _progress_cache:
         return _progress_cache[key]
 
     document.index().refresh(using=config.es.client)
     search = document.search(using=config.es.client)
-    if len(required_fields) > 0:
-        query = Exists(field=required_fields[0])
-        for required_field in required_fields[1:]:
-            query &= Exists(field=required_field)
-        search = search.filter(query)
+    if filter_query is not None:
+        search = search.filter(filter_query)
     total = search.count()
     search_processed = search.filter(
         Exists(field="last_modified") &
         Exists(field=timestamp_field) &
         Script(
-            script=f"doc['last_modified'].value.isBefore("
+            script=f"!doc['last_modified'].value.isAfter("
                    f"doc['{timestamp_field}'].value)",
         )
     )
@@ -187,7 +181,7 @@ def home(config: Config) -> str | Response:
             description="SERPs for which the query has been parsed "
                         "from the URL.",
             document=Serp,
-            required_fields=("url_query",),
+            filter_query=Exists(field="url_query"),
         ),
         _get_statistics(
             config=config,
@@ -195,7 +189,7 @@ def home(config: Config) -> str | Response:
             description="SERPs for which the page has been parsed "
                         "from the URL.",
             document=Serp,
-            required_fields=("url_page",),
+            filter_query=Exists(field="url_page"),
         ),
         _get_statistics(
             config=config,
@@ -203,14 +197,14 @@ def home(config: Config) -> str | Response:
             description="SERPs for which the offset has been parsed "
                         "from the URL.",
             document=Serp,
-            required_fields=("url_offset",),
+            filter_query=Exists(field="url_offset"),
         ),
         _get_statistics(
             config=config,
             name="+ WARC",
             description="SERPs for which the WARC has been downloaded.",
             document=Serp,
-            required_fields=("warc_location",),
+            filter_query=Exists(field="warc_location"),
         ),
         _get_statistics(
             config=config,
@@ -218,7 +212,7 @@ def home(config: Config) -> str | Response:
             description="SERPs for which the query has been parsed "
                         "from the WARC.",
             document=Serp,
-            required_fields=("warc_query",),
+            filter_query=Exists(field="warc_query"),
         ),
         _get_statistics(
             config=config,
@@ -226,7 +220,7 @@ def home(config: Config) -> str | Response:
             description="SERPs for which the snippets have been parsed "
                         "from the WARC.",
             document=Serp,
-            required_fields=("warc_snippets",),
+            filter_query=Exists(field="warc_snippets"),
         ),
         _get_statistics(
             config=config,
@@ -310,6 +304,7 @@ def home(config: Config) -> str | Response:
             output_name="SERPs",
             description="Download WARCs.",
             document=Serp,
+            filter_query=Term(capture__status_code=200),
             timestamp_field="warc_downloader.last_downloaded",
         ),
         _get_processed_progress(
@@ -318,8 +313,8 @@ def home(config: Config) -> str | Response:
             output_name="SERPs",
             description="Parse query from WARC contents.",
             document=Serp,
+            filter_query=Exists(field="warc_location"),
             timestamp_field="warc_query_parser.last_parsed",
-            required_fields=("warc_location",),
         ),
         _get_processed_progress(
             config=config,
@@ -327,8 +322,8 @@ def home(config: Config) -> str | Response:
             output_name="SERPs",
             description="Parse snippets from WARC contents.",
             document=Serp,
+            filter_query=Exists(field="warc_location"),
             timestamp_field="warc_snippets_parser.last_parsed",
-            required_fields=("warc_location",),
         ),
     ]