diff --git a/app/controllers/check_variables.php b/app/controllers/check_variables.php
index 1cb0ad05..d14b4578 100644
--- a/app/controllers/check_variables.php
+++ b/app/controllers/check_variables.php
@@ -11,7 +11,7 @@
     and display the results as JSON instead of loading view and template.
 */
 if (isset($_GET['json'])) {
-    $json = $var_errors;
+    $json = array_column($var_errors, 'string_id');
     include VIEWS . 'json.php';
     die();
 }
diff --git a/app/controllers/commandkeys.php b/app/controllers/commandkeys.php
index cca4d5a4..3d347e37 100644
--- a/app/controllers/commandkeys.php
+++ b/app/controllers/commandkeys.php
@@ -11,7 +11,7 @@
     and display the results as JSON instead of loading view and template.
 */
 if (isset($_GET['json'])) {
-    $json = $commandkey_results;
+    $json = array_column($commandkey_results, 'id');
     include VIEWS . 'json.php';
     die();
 }
diff --git a/app/models/accesskeys.php b/app/models/accesskeys.php
index 966a0219..3ed3be2a 100644
--- a/app/models/accesskeys.php
+++ b/app/models/accesskeys.php
@@ -1,6 +1,8 @@
 <?php
 namespace Transvision;
 
+use Cache\Cache;
+
 $error_messages = [];
 $reference_locale = Project::getReferenceLocale($repo);
 $supported_locales = Project::getRepositoryLocales($repo, [$reference_locale]);
@@ -25,86 +27,103 @@
 }
 $channel_selector = Utils::getHtmlSelectOptions($channels, $repo, true);
 
-// Get strings
-$source = Utils::getRepoStrings($reference_locale, $repo);
-$target = Utils::getRepoStrings($locale, $repo);
+$cache_id = $repo . $locale . 'accesskeys';
+$ak_results = Cache::getKey($cache_id);
+if ($ak_results === false) {
+    // Get strings
+    $source = Utils::getRepoStrings($reference_locale, $repo);
+    $target = Utils::getRepoStrings($locale, $repo);
 
-// Get strings with 'accesskey' in the string ID
-$ak_string_ids = array_filter(
-    array_keys($target),
-    function ($entity) {
-        return strpos($entity, '.accesskey') !== false;
-    }
-);
+    // Get strings with 'accesskey' in the string ID
+    $ak_string_ids = array_filter(
+        array_keys($target),
+        function ($entity) {
+            return strpos($entity, '.accesskey') !== false;
+        }
+    );
 
-// Possible labels associated to an access key
-$ak_labels = ['.label', '.title', '.message', ''];
+    // Possible labels associated to an access key
+    $ak_labels = ['.label', '.title', '.message', ''];
 
-// Some keys map to a different string ID than the one identified by the
-// algorithm
-$known_mappings = [
-    'browser/chrome/browser/browser.properties:decoder.noCodecs.accesskey' => 'browser/chrome/browser/browser.properties:decoder.noCodecs.button',
-    'browser/chrome/browser/preferences/sync.dtd:engine.tabs.accesskey'    => 'browser/chrome/browser/preferences/sync.dtd:engine.tabs.label2',
-];
+    // Some keys map to a different string ID than the one identified by the
+    // algorithm
+    $known_mappings = [
+        'browser/chrome/browser/browser.properties:decoder.noCodecs.accesskey' => 'browser/chrome/browser/browser.properties:decoder.noCodecs.button',
+        'browser/chrome/browser/preferences/sync.dtd:engine.tabs.accesskey'    => 'browser/chrome/browser/preferences/sync.dtd:engine.tabs.label2',
+    ];
 
-$ak_results = [];
-foreach ($ak_string_ids as $ak_string_id) {
-    // Exclude accesskey if it's in a FTL file and includes PLATFORM()
-    if (strpos($ak_string_id, '.ftl:') !== false && strpos($source[$ak_string_id], 'PLATFORM()') !== false) {
-        continue;
-    }
+    $ak_results = [];
+    foreach ($ak_string_ids as $ak_string_id) {
+        // Exclude accesskey if it's in a FTL file and includes PLATFORM()
+        if (strpos($ak_string_id, '.ftl:') !== false && strpos($source[$ak_string_id], 'PLATFORM()') !== false) {
+            continue;
+        }
 
-    if (isset($known_mappings[$ak_string_id])) {
-        $entity = $known_mappings[$ak_string_id];
-        // Check if the label is translated
-        if (isset($target[$entity]) && $target[$entity] !== '') {
-            $current_ak = $target[$ak_string_id];
-            if (($current_ak == '') || (mb_stripos($target[$entity], $current_ak) === false)) {
-                $ak_results[$ak_string_id] = $entity;
+        if (isset($known_mappings[$ak_string_id])) {
+            $entity = $known_mappings[$ak_string_id];
+            // Check if the label is translated
+            if (isset($target[$entity]) && $target[$entity] !== '') {
+                $current_ak = $target[$ak_string_id];
+                if (($current_ak == '') || (mb_stripos($target[$entity], $current_ak) === false)) {
+                    $ak_results[] = [
+                        'label_id'      => $entity,
+                        'label_txt'     => $target[$entity],
+                        'accesskey_id'  => $ak_string_id,
+                        'accesskey_txt' => $current_ak,
+                    ];
+                }
             }
-        }
-    } else {
-        foreach ($ak_labels as $ak_label) {
-            /*
-                Replace 'accesskey' with one of the known IDs used for labels.
-                E.g.:
-                * foo.accesskey -> foo.label
-                * foo.accesskey -> foo.title
-                * foo.accesskey -> foo.message
-                * foo.accesskey -> foo (common in devtools)
-            */
-            $entity = str_replace('.accesskey', $ak_label, $ak_string_id);
-            $current_ak = $target[$ak_string_id];
+        } else {
+            foreach ($ak_labels as $ak_label) {
+                /*
+                    Replace 'accesskey' with one of the known IDs used for labels.
+                    E.g.:
+                    * foo.accesskey -> foo.label
+                    * foo.accesskey -> foo.title
+                    * foo.accesskey -> foo.message
+                    * foo.accesskey -> foo (common in devtools)
+                */
+                $entity = str_replace('.accesskey', $ak_label, $ak_string_id);
+                $current_ak = $target[$ak_string_id];
 
-            /*
-                Ignore:
-                * Strings not available or empty in target locale.
-                * Empty access keys in source locale.
-            */
-            if (isset($target[$entity]) && $target[$entity] !== '' && $source[$ak_string_id] !== '') {
                 /*
-                    Store the string if the access key is empty or using a
-                    character not available in the label.
+                    Ignore:
+                    * Strings not available or empty in target locale.
+                    * Empty access keys in source locale.
                 */
-                if (($current_ak == '') || (mb_stripos($target[$entity], $current_ak) === false)) {
-                    $ak_results[$ak_string_id] = $entity;
+                if (isset($target[$entity]) && $target[$entity] !== '' && $source[$ak_string_id] !== '') {
+                    /*
+                        Store the string if the access key is empty or using a
+                        character not available in the label.
+                    */
+                    if (($current_ak == '') || (mb_stripos($target[$entity], $current_ak) === false)) {
+                        $ak_results[] = [
+                            'label_id'      => $entity,
+                            'label_txt'     => $target[$entity],
+                            'accesskey_id'  => $ak_string_id,
+                            'accesskey_txt' => $current_ak,
+                        ];
+                    }
                 }
-            }
 
-            /*
-                If we found an entity with the expected name in source strings,
-                we should stop cycling through $ak_labels.
-            */
-            if (isset($source[$entity])) {
-                break;
+                /*
+                    If we found an entity with the expected name in source strings,
+                    we should stop cycling through $ak_labels.
+                */
+                if (isset($source[$entity])) {
+                    break;
+                }
             }
         }
     }
+    Cache::setKey($cache_id, $ak_results);
+    unset($source);
+    unset($target);
 }
 
 // Build components filter
 if (in_array($repo, $desktop_repos)) {
-    $components = Project::getComponents(array_flip($ak_results));
+    $components = Project::getComponents(array_flip(array_column($ak_results, 'accesskey_id')));
     $filter_block = ShowResults::buildComponentsFilter($components);
 }
 
diff --git a/app/models/check_variables.php b/app/models/check_variables.php
index 03c8c497..0899f8c5 100644
--- a/app/models/check_variables.php
+++ b/app/models/check_variables.php
@@ -1,6 +1,8 @@
 <?php
 namespace Transvision;
 
+use Cache\Cache;
+
 $reference_locale = Project::getReferenceLocale($repo);
 $supported_locales = Project::getRepositoryLocales($repo, [$reference_locale]);
 // If the requested locale is not available, fall back to the first
@@ -8,9 +10,6 @@
     $locale = array_shift($supported_locales);
 }
 
-$source = Utils::getRepoStrings($reference_locale, $repo);
-$target = Utils::getRepoStrings($locale, $repo);
-
 // Set up channel selector, ignore mozilla.org
 $channels = Project::getSupportedRepositories();
 unset($channels['mozilla_org']);
@@ -19,22 +18,40 @@
 // Build the target locale switcher
 $target_locales_list = Utils::getHtmlSelectOptions($supported_locales, $locale);
 
-$source = array_map(['Transvision\AnalyseStrings', 'cleanUpEntities'], $source);
-$target = array_map(['Transvision\AnalyseStrings', 'cleanUpEntities'], $target);
-
-// We need to ignore some strings because of false positives
-$ignored_strings = [
-    'mail/chrome/messenger/aboutRights.dtd:rights.webservices-term4',
-    'suite/chrome/branding/aboutRights.dtd:rights.webservices-term4',
-    'toolkit/chrome/global/aboutRights.dtd:rights.webservices-term5',
-];
-
-$var_errors = AnalyseStrings::differences($source, $target, $repo, $ignored_strings);
+$cache_id = $repo . $locale . 'variables';
+$var_errors = Cache::getKey($cache_id);
+if ($var_errors === false) {
+    $source = Utils::getRepoStrings($reference_locale, $repo);
+    $target = Utils::getRepoStrings($locale, $repo);
+    $var_errors = [];
+
+    $source = array_map(['Transvision\AnalyseStrings', 'cleanUpEntities'], $source);
+    $target = array_map(['Transvision\AnalyseStrings', 'cleanUpEntities'], $target);
+
+    // We need to ignore some strings because of false positives
+    $ignored_strings = [
+        'mail/chrome/messenger/aboutRights.dtd:rights.webservices-term4',
+        'suite/chrome/branding/aboutRights.dtd:rights.webservices-term4',
+        'toolkit/chrome/global/aboutRights.dtd:rights.webservices-term5',
+    ];
+
+    $string_ids = AnalyseStrings::differences($source, $target, $repo, $ignored_strings);
+    foreach ($string_ids as $string_id) {
+        $var_errors[] = [
+            'string_id'     => $string_id,
+            'source_string' => $source[$string_id],
+            'target_string' => $target[$string_id],
+        ];
+    }
+    Cache::setKey($cache_id, $var_errors);
+    unset($source);
+    unset($target);
+}
 $error_count = count($var_errors);
 
 // Build components filter
 if (in_array($repo, $desktop_repos)) {
-    $components = Project::getComponents(array_flip($var_errors));
+    $components = Project::getComponents(array_flip(array_column($var_errors, 'string_id')));
     $filter_block = ShowResults::buildComponentsFilter($components);
 }
 
diff --git a/app/models/commandkeys.php b/app/models/commandkeys.php
index 6580ba38..e3a0ee60 100644
--- a/app/models/commandkeys.php
+++ b/app/models/commandkeys.php
@@ -1,6 +1,8 @@
 <?php
 namespace Transvision;
 
+use Cache\Cache;
+
 $error_messages = [];
 $reference_locale = Project::getReferenceLocale($repo);
 $supported_locales = Project::getRepositoryLocales($repo, [$reference_locale]);
@@ -25,49 +27,60 @@
 }
 $channel_selector = Utils::getHtmlSelectOptions($channels, $repo, true);
 
-// Get strings
-$source = Utils::getRepoStrings($reference_locale, $repo);
-$target = Utils::getRepoStrings($locale, $repo);
+$cache_id = $repo . $locale . 'commandkeys';
+$commandkey_results = Cache::getKey($cache_id);
+if ($commandkey_results === false) {
+    // Get strings
+    $source = Utils::getRepoStrings($reference_locale, $repo);
+    $target = Utils::getRepoStrings($locale, $repo);
 
-// Get string IDs in target ending with '.key' or '.commandkey'
-$commandkey_ids = array_filter(
-    array_keys($target),
-    function ($entity) {
-        return Strings::endsWith($entity, ['.key', '.commandkey']);
-    }
-);
+    // Get string IDs in target ending with '.key' or '.commandkey'
+    $commandkey_ids = array_filter(
+        array_keys($target),
+        function ($entity) {
+            return Strings::endsWith($entity, ['.key', '.commandkey']);
+        }
+    );
 
-// Known false positives to ignore
-$ignored_ids = [
-    'browser/chrome/browser/browser.properties:addonPostInstall.okay.key',
-    'devtools/client/webconsole.properties:table.key',
-];
-$ignored_files = [
-    'extensions/irc/chrome/chatzilla.properties',
-    'toolkit/chrome/global/charsetMenu.properties',
-];
+    // Known false positives to ignore
+    $ignored_ids = [
+        'browser/chrome/browser/browser.properties:addonPostInstall.okay.key',
+        'devtools/client/webconsole.properties:table.key',
+    ];
+    $ignored_files = [
+        'extensions/irc/chrome/chatzilla.properties',
+        'toolkit/chrome/global/charsetMenu.properties',
+    ];
 
-$commandkey_results = [];
-/*
-    Get keyboard shortcuts different from English (ignoring case), and
-    exclude known false positives.
-*/
-foreach ($commandkey_ids as $commandkey_id) {
-    if (in_array($commandkey_id, $ignored_ids)) {
-        continue;
-    }
+    $commandkey_results = [];
+    /*
+        Get keyboard shortcuts different from English (ignoring case), and
+        exclude known false positives.
+    */
+    foreach ($commandkey_ids as $commandkey_id) {
+        if (in_array($commandkey_id, $ignored_ids)) {
+            continue;
+        }
 
-    if (Strings::startsWith($commandkey_id, $ignored_files)) {
-        continue;
-    }
+        if (Strings::startsWith($commandkey_id, $ignored_files)) {
+            continue;
+        }
 
-    if (mb_strtoupper($target[$commandkey_id]) != mb_strtoupper($source[$commandkey_id])) {
-        $commandkey_results[] = $commandkey_id;
+        if (mb_strtoupper($target[$commandkey_id]) != mb_strtoupper($source[$commandkey_id])) {
+            $commandkey_results[] = [
+                'id'              => $commandkey_id,
+                'source_shortcut' => $source[$commandkey_id],
+                'target_shortcut' => $target[$commandkey_id],
+            ];
+        }
     }
+    Cache::setKey($cache_id, $commandkey_results);
+    unset($source);
+    unset($target);
 }
 
 // Build components filter
-$components = Project::getComponents(array_flip($commandkey_results));
+$components = Project::getComponents(array_flip(array_column($commandkey_results, 'id')));
 $filter_block = ShowResults::buildComponentsFilter($components);
 
 // RTL support
diff --git a/app/views/accesskeys.php b/app/views/accesskeys.php
index 9aedc078..94a88038 100644
--- a/app/views/accesskeys.php
+++ b/app/views/accesskeys.php
@@ -7,6 +7,13 @@
 if (! empty($ak_results)) {
     $search_id = 'accesskeys';
     $content = '';
+
+    if (count($ak_results) > 200) {
+        $error_messages[] = 'The number of errors (' . count($ak_results)
+                            . ') is too large and has been truncated.';
+        $ak_results = array_slice($ak_results, 0, 200);
+    }
+
     if (! empty($error_messages)) {
         $content .= '<p class="error">' .
             implode('<br/>', $error_messages) .
@@ -35,7 +42,12 @@
     // Get the tool used to edit strings for the target locale
     $toolUsedByTargetLocale = Project::getLocaleTool($locale);
 
-    foreach ($ak_results as $ak_string => $ak_label) {
+    foreach ($ak_results as $ak_result) {
+        $ak_string = $ak_result['accesskey_id'];
+        $ak_label = $ak_result['label_id'];
+        $accesskey_txt = $ak_result['accesskey_txt'];
+        $label_txt = $ak_result['label_txt'];
+
         // Link to entity
         $ak_link = "?sourcelocale={$reference_locale}" .
            "&locale={$locale}" .
@@ -52,17 +64,17 @@
         $path_label = VersionControl::hgPath($locale, $repo, $ak_label);
 
         $edit_link_ak = $toolUsedByTargetLocale != ''
-            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $ak_string, $target[$ak_string], $locale)
+            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $ak_string, $accesskey_txt, $locale)
             : '';
         $edit_link_label = $toolUsedByTargetLocale != ''
-            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $ak_label, $target[$ak_label], $locale)
+            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $ak_label, $label_txt, $locale)
             : '';
 
-        $ak_value = ! empty($target[$ak_string])
-            ? Utils::secureText($target[$ak_string])
+        $ak_value = ! empty($accesskey_txt)
+            ? Utils::secureText($accesskey_txt)
             : '<em class="error">(empty)</em>';
-        $label_value = ! empty($target[$ak_label])
-            ? Utils::secureText($target[$ak_label])
+        $label_value = ! empty($label_txt)
+            ? Utils::secureText($label_txt)
             : '<em class="error">(empty)</em>';
 
         $component = explode('/', $ak_string)[0];
diff --git a/app/views/check_variables.php b/app/views/check_variables.php
index f04b0caa..80b509e6 100644
--- a/app/views/check_variables.php
+++ b/app/views/check_variables.php
@@ -28,22 +28,26 @@
     // Get the tool used to edit strings for the target locale
     $toolUsedByTargetLocale = Project::getLocaleTool($locale);
 
-    foreach ($var_errors as $string_id) {
+    foreach ($var_errors as $var_error) {
         // Link to entity
+        $string_id = $var_error['string_id'];
+        $source_string = $var_error['source_string'];
+        $target_string = $var_error['target_string'];
+
         $string_id_link = "?sourcelocale={$source_locale}" .
                           "&locale={$locale}" .
                           "&repo={$repo}" .
                           "&search_type=entities&recherche={$string_id}" .
                           '&entire_string=entire_string';
         $bugzilla_link = Bugzilla::reportErrorLink(
-            $locale, $string_id, $source[$string_id],
-            $target[$string_id], $repo, $string_id_link
+            $locale, $string_id, $source_string,
+            $target_string, $repo, $string_id_link
         );
 
         $path_source_locale = VersionControl::hgPath($source_locale, $repo, $string_id);
         $path_target_locale = VersionControl::hgPath($locale, $repo, $string_id);
         $edit_link = $toolUsedByTargetLocale != ''
-            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $string_id, $target[$string_id], $locale)
+            ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $string_id, $target_string, $locale)
             : '';
 
         $component = explode('/', $string_id)[0];
@@ -56,14 +60,14 @@
                        </td>
                        <td dir='{$direction1}'>
                           <span class='celltitle'>{$source_locale}</span>
-                          <div class='string'>" . Utils::secureText($source[$string_id]) . "</div>
+                          <div class='string'>" . Utils::secureText($source_string) . "</div>
                           <div dir='ltr' class='result_meta_link'>
                             <a class='source_link' href='{$path_source_locale}'>&lt;source&gt;</a>
                           </div>
                        </td>
                         <td dir='{$direction2}'>
                           <span class='celltitle'>$locale</span>
-                          <div class='string'>" . Utils::secureText($target[$string_id]) . "</div>
+                          <div class='string'>" . Utils::secureText($target_string) . "</div>
                           <div dir='ltr' class='result_meta_link'>
                             <a class='source_link' href='{$path_target_locale}'>&lt;source&gt;</a>
                             {$edit_link}
diff --git a/app/views/commandkeys.php b/app/views/commandkeys.php
index 917f7d5a..926e112d 100644
--- a/app/views/commandkeys.php
+++ b/app/views/commandkeys.php
@@ -34,7 +34,10 @@
     // Get the tool used to edit strings for the target locale
     $toolUsedByTargetLocale = Project::getLocaleTool($locale);
 
-    foreach ($commandkey_results as $key) {
+    foreach ($commandkey_results as $commandkey_result) {
+        $key = $commandkey_result['id'];
+        $translated_shortcut = $commandkey_result['target_shortcut'];
+        $source_shortcut = $commandkey_result['source_shortcut'];
         $entity = ShowResults::formatEntity($key);
         $component = explode('/', $key)[0];
 
@@ -44,9 +47,6 @@
             . "&search_type=entities&recherche={$key}"
             . '&entire_string=entire_string';
 
-        $translated_shortcut = $target[$key];
-        $source_shortcut = $source[$key];
-
         $edit_link = $toolUsedByTargetLocale != ''
             ? ShowResults::getEditLink($toolUsedByTargetLocale, $repo, $key, $translated_shortcut, $locale)
             : '';