gaussianrecurrence commented on a change in pull request #678:
URL: https://github.com/apache/geode-native/pull/678#discussion_r603897236



##########
File path: cppcache/src/CacheStatistics.cpp
##########
@@ -21,20 +21,20 @@ namespace apache {
 namespace geode {
 namespace client {
 
-void CacheStatistics::setLastModifiedTime(time_point lmt) {
-  m_lastModifiedTime = lmt.time_since_epoch().count();
+void CacheStatistics::setLastModifiedTime(const time_point& tp) {
+  last_modified_ = tp.time_since_epoch().count();

Review comment:
       Explained in my comment below

##########
File path: cppcache/src/EntryExpiryTask.cpp
##########
@@ -0,0 +1,123 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "EntryExpiryTask.hpp"
+
+#include "CacheImpl.hpp"
+#include "RegionInternal.hpp"
+
+namespace apache {
+namespace geode {
+namespace client {
+
+EntryExpiryTask::EntryExpiryTask(ExpiryTaskManager& manager,
+                                 std::shared_ptr<RegionInternal> region,
+                                 std::shared_ptr<MapEntryImpl> entry,
+                                 ExpirationAction action,
+                                 const duration_t& duration)
+    : ExpiryTask(manager),
+      duration_(duration),
+      action_(action),
+      entry_(entry),
+      region_(region) {}
+
+EntryExpiryTask::time_point_t EntryExpiryTask::expire_at() const {
+  auto& properties = entry_->getExpProperties();
+  auto last_time = properties.last_accessed();
+  if (region_->getAttributes().getEntryTimeToLive() >
+      std::chrono::seconds::zero()) {
+    last_time = properties.last_modified();
+  }
+
+  return last_time + duration_;
+}
+
+bool EntryExpiryTask::on_expire() {
+  auto tp = expire_at();
+  if (tp > ExpiryTask::clock_t::now()) {
+    // Entry expiration needs to be re-scheduled as it was accessed/modified
+    // since the last time the expiration task was (re-)scheduled.
+    // This is the best approach, rather than re-scheduling the task each time
+    // the entry is accessed/modified, as access/modify is a more frequent
+    // event than expiration.
+    reset(tp);
+    return false;
+  }
+
+  // Pass a blank version tag.
+  std::shared_ptr<CacheableKey> key;
+  std::shared_ptr<VersionTag> versionTag;
+
+  entry_->getKeyI(key);
+
+  const auto full_path = region_->getFullPath().c_str();
+  auto key_str = Utils::nullSafeToString(key);
+
+  switch (action_) {
+    case ExpirationAction::INVALIDATE: {
+      LOGDEBUG(
+          "EntryExpiryTask::DoTheExpirationAction INVALIDATE "

Review comment:
       Done




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