wheels-dev · bpamiri · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026
diff --git a/changelog.d/debugbar-externalized-assets.changed.md b/changelog.d/debugbar-externalized-assets.changed.md
@@ -0,0 +1 @@
+- The development debug bar's static CSS and JavaScript are now maintained as standalone files (`vendor/wheels/public/assets/css/debugbar.css`, `vendor/wheels/public/assets/js/debugbar.js`) and included into the bar, eliminating the CFML `##`-escaped inline blocks (a documented "unescaped `#` crashes the suite" hazard) and trimming the per-response debug payload via inter-tag whitespace collapse. The bar remains development-only and unchanged in production (#3210)
diff --git a/changelog.d/deploy-warmup-up-endpoint.added.md b/changelog.d/deploy-warmup-up-endpoint.added.md
@@ -0,0 +1 @@
+- New apps scaffolded with `wheels new` now ship a `/up` liveness/warm-up endpoint (`app/controllers/Up.cfc` + route). `wheels deploy`'s proxy healthcheck already probes `/up` before traffic cutover, so the dispatch → controller → render path is compiled on a freshly deployed node before the first real visitor — moving the one-time cold-start compile (the bulk of first-request latency) off user traffic. The production-config guide documents the warm-up recipe and recommends setting the engine's template-inspection mode to `never` in production (#3210)
diff --git a/changelog.d/protected-methods-o1-lookup.performance.md b/changelog.d/protected-methods-o1-lookup.performance.md
@@ -0,0 +1 @@
+- The per-request action-dispatch gate now tests the protected-helper list with an O(1) `StructKeyExists` lookup instead of an O(n) `ListFindNoCase` scan over the ~100-250 framework helper names. A companion `application.wheels.protectedControllerMethodsLookup` struct-as-set is built once at application start alongside the existing comma-list (which is retained); case-insensitive matching is unchanged (#3210)
diff --git a/changelog.d/schema-column-cache.performance.md b/changelog.d/schema-column-cache.performance.md
@@ -0,0 +1 @@
+- Database column metadata is now memoized per datasource+table in `application.wheels.cache.schema` when `cacheDatabaseSchema` is on (the default). Previously every model class init issued a fresh `cfdbinfo type="columns"` JDBC catalog round-trip — a significant first-request cost on remote or wide-schema databases, re-paid on every reload and for every model sharing a table. The cache is rebuilt on reload, so schema changes are still picked up on reload (the same contract as the model and controller config caches) (#3210)
diff --git a/cli/lucli/templates/app/app/controllers/Up.cfc b/cli/lucli/templates/app/app/controllers/Up.cfc
@@ -0,0 +1,25 @@
+component extends="Controller" {
+
+	/**
+	 * Liveness / warm-up endpoint.
+	 *
+	 * `wheels deploy`'s proxy healthcheck probes `/up` before flipping traffic
+	 * to a freshly deployed node (the default healthcheck path), and load
+	 * balancers can use it as a readiness check. Returning 200 here also
+	 * compiles the dispatch -> controller -> render path on the new host, so the
+	 * first real visitor sees warm latency instead of the one-time first-request
+	 * compile (which is otherwise the bulk of cold-start time).
+	 *
+	 * To warm your hottest ORM metadata too, touch your key models here before
+	 * cutover, e.g.:
+	 *
+	 *   model("Post").count();
+	 *
+	 * Keep this action read-only, cheap, and free of authentication so the probe
+	 * is never blocked.
+	 */
+	function index() {
+		renderText("OK");
+	}
+
+}
diff --git a/cli/lucli/templates/app/config/routes.cfm b/cli/lucli/templates/app/config/routes.cfm
@@ -7,6 +7,11 @@
 	mapper()
 		// CLI-Appends-Here
 
+		// Liveness / warm-up endpoint. `wheels deploy`'s proxy healthcheck probes
+		// `/up` before traffic cutover; a 200 here also compiles the request path
+		// so the first real visitor gets warm latency. See app/controllers/Up.cfc.
+		.get(name="up", to="up##index")
+
 		// The "wildcard" call below enables automatic mapping of "controller/action" type routes.
 		// This way you don't need to explicitly add a route every time you create a new action in a controller.
 		.wildcard()

diff --git a/vendor/wheels/Global.cfc b/vendor/wheels/Global.cfc
@@ -4389,6 +4389,24 @@ return local.$wheels;
 		return protectedMethods;
 	}
 
+	/**
+	 * Convert the comma-list returned by `$buildProtectedControllerMethods()`
+	 * into a struct-as-set so `$callAction()` can perform an O(1)
+	 * `StructKeyExists` membership test on the per-request dispatch hot path
+	 * instead of an O(n) `ListFindNoCase` scan over ~100-250 helper names.
+	 * CFML struct keys are case-insensitive by default, preserving the prior
+	 * `ListFindNoCase` semantics (an action named `ENV` is still rejected like
+	 * `env`). Stored on `application.wheels.protectedControllerMethodsLookup`
+	 * alongside the list, which is retained for callers expecting that shape.
+	 */
+	public struct function $protectedControllerMethodsLookup(required string methods) {
+		var lookup = {};
+		for (var name in ListToArray(arguments.methods)) {
+			lookup[name] = true;
+		}
+		return lookup;
+	}
+
 	/**
 	 * Re-evaluate the given global-includes file into `application.wo`'s
 	 * variables/this scope. Invoked from the bare `?reload=true` soft-reload

diff --git a/vendor/wheels/controller/processing.cfc b/vendor/wheels/controller/processing.cfc
@@ -135,7 +135,7 @@ component {
 	 * Internal function.
 	 */
 	public void function $callAction(required string action) {
-		if (Left(arguments.action, 1) == "$" || ListFindNoCase(application.wheels.protectedControllerMethods, arguments.action)) {
+		if (Left(arguments.action, 1) == "$" || StructKeyExists(application.wheels.protectedControllerMethodsLookup, arguments.action)) {
 			// A helper-named or $-prefixed action is treated exactly like a
 			// missing action: it 404s (see #2845 and CLAUDE.md Anti-Pattern 8).
 			// Route through $throwErrorOrShow404Page — mirroring RecordNotFound /

diff --git a/vendor/wheels/databaseAdapters/Base.cfc b/vendor/wheels/databaseAdapters/Base.cfc
@@ -417,6 +417,23 @@ component output=false extends="wheels.Global"{
 		local.args.username = variables.username;
 		local.args.password = variables.password;
 		local.args.table = arguments.tableName;
+
+		// Column metadata is a JDBC catalog round-trip (cfdbinfo type="columns")
+		// fetched once per model class. On remote / wide-schema databases that
+		// round-trip dominates first-request latency, and it is otherwise re-paid
+		// on every reload and for every model sharing a table. When
+		// cacheDatabaseSchema is on, memoize the result per datasource+table in
+		// application scope. A reload rebuilds the application scope, so schema
+		// changes are still picked up on reload — the same contract as the model
+		// and controller config caches. (perf)
+		local.cacheSchema = $get("cacheDatabaseSchema");
+		if (local.cacheSchema) {
+			local.cacheKey = Hash(variables.dataSource & Chr(31) & arguments.tableName);
+			if (StructKeyExists(application.wheels.cache.schema, local.cacheKey)) {
+				return application.wheels.cache.schema[local.cacheKey];
+			}
+		}
+
 		if ($get("showErrorInformation")) {
 			try {
 				local.rv = $getColumnInfo(argumentCollection = local.args);
@@ -430,6 +447,12 @@ component output=false extends="wheels.Global"{
 		} else {
 			local.rv = $getColumnInfo(argumentCollection = local.args);
 		}
+
+		if (local.cacheSchema) {
+			lock name="wheels.cache.schema" type="exclusive" timeout="10" {
+				application.wheels.cache.schema[local.cacheKey] = local.rv;
+			}
+		}
 		return local.rv;
 	}
 

diff --git a/vendor/wheels/events/onapplicationstart.cfc b/vendor/wheels/events/onapplicationstart.cfc
@@ -128,6 +128,7 @@ component {
 		application.$wheels.cache.page = {};
 		application.$wheels.cache.partial = {};
 		application.$wheels.cache.query = {};
+		application.$wheels.cache.schema = {};
 		application.$wheels.cacheLastCulledAt = Now();
 
 		// Set up paths to various folders in the framework. When the app
@@ -400,6 +401,13 @@ component {
 		// helpers like env(), model(), redirectTo() are never URL-invokable.
 		application.$wheels.protectedControllerMethods = application.wo.$buildProtectedControllerMethods();
 
+		// Companion struct-as-set for O(1) membership checks on the dispatch hot
+		// path (see $callAction()); the comma-list above is kept for callers that
+		// expect that shape.
+		application.$wheels.protectedControllerMethodsLookup = application.wo.$protectedControllerMethodsLookup(
+			application.$wheels.protectedControllerMethods
+		);
+
 		// Enable the main GUI Component
 		if (application.$wheels.enablePublicComponent) {
 			application.$wheels.public = application.wo.$createObjectFromRoot(path = "wheels", fileName = "Public", method = "$init");

diff --git a/vendor/wheels/events/onrequestend/debug.cfm b/vendor/wheels/events/onrequestend/debug.cfm
@@ -83,51 +83,9 @@ OR (StructKeyExists(url, "format") AND ListFindNoCase("json,xml,csv,pdf", url.fo
 	</cfif>
 </cfloop>
 <!--- cfformat-ignore-start --->
-<cfoutput>
+<cfsavecontent variable="local.wdbHtml"><cfoutput>
 <div id="wheels-debugbar" style="all:initial;position:fixed;bottom:0;left:0;right:0;z-index:99999;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;">
-<style>
-##wheels-debugbar *{box-sizing:border-box;margin:0;padding:0;}
-##wheels-debugbar{position:fixed;bottom:0;left:0;right:0;z-index:99999;font-size:13px;line-height:1.4;}
-##wheels-debugbar .wdb-bar{display:flex;align-items:center;background:##1e1e2e;color:##cdd6f4;height:36px;padding:0 8px;gap:2px;border-top:1px solid ##45475a;user-select:none;}
-##wheels-debugbar .wdb-bar a,##wheels-debugbar .wdb-bar span{color:##cdd6f4;text-decoration:none;}
-##wheels-debugbar .wdb-tab{display:flex;align-items:center;gap:5px;padding:0 10px;height:36px;cursor:pointer;border:none;background:none;color:##cdd6f4;font-size:12px;font-family:inherit;white-space:nowrap;transition:background .15s;}
-##wheels-debugbar .wdb-tab:hover{background:##313244;}
-##wheels-debugbar .wdb-tab.active{background:##313244;color:##89b4fa;border-top:2px solid ##89b4fa;padding-top:2px;}
-##wheels-debugbar .wdb-tab svg{width:14px;height:14px;fill:currentColor;flex-shrink:0;}
-##wheels-debugbar .wdb-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:9px;font-size:10px;font-weight:700;line-height:1;}
-##wheels-debugbar .wdb-badge-green{background:##28a74533;color:##a6e3a1;}
-##wheels-debugbar .wdb-badge-yellow{background:##ffc10733;color:##f9e2af;}
-##wheels-debugbar .wdb-badge-red{background:##dc354533;color:##f38ba8;}
-##wheels-debugbar .wdb-badge-blue{background:##89b4fa33;color:##89b4fa;}
-##wheels-debugbar .wdb-sep{width:1px;height:20px;background:##45475a;margin:0 4px;}
-##wheels-debugbar .wdb-spacer{flex:1;}
-##wheels-debugbar .wdb-panel{display:none;position:fixed;bottom:36px;left:0;right:0;max-height:50vh;background:##1e1e2e;border-top:1px solid ##45475a;overflow-y:auto;color:##cdd6f4;padding:0;}
-##wheels-debugbar .wdb-panel.open{display:block;}
-##wheels-debugbar .wdb-panel-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid ##313244;position:sticky;top:0;background:##1e1e2e;z-index:1;}
-##wheels-debugbar .wdb-panel-header h3{font-size:14px;font-weight:600;color:##cdd6f4;}
-##wheels-debugbar .wdb-panel-body{padding:12px 16px;}
-##wheels-debugbar .wdb-table{width:100%;border-collapse:collapse;}
-##wheels-debugbar .wdb-table th{text-align:left;padding:6px 12px;font-size:11px;font-weight:600;color:##a6adc8;text-transform:uppercase;letter-spacing:.5px;background:##181825;border-bottom:1px solid ##313244;}
-##wheels-debugbar .wdb-table td{padding:6px 12px;border-bottom:1px solid ##313244;font-size:12px;vertical-align:top;}
-##wheels-debugbar .wdb-table tr:hover td{background:##31324433;}
-##wheels-debugbar .wdb-kv{display:grid;grid-template-columns:180px 1fr;gap:0;}
-##wheels-debugbar .wdb-kv dt{padding:6px 12px;font-weight:600;color:##a6adc8;font-size:12px;border-bottom:1px solid ##313244;}
-##wheels-debugbar .wdb-kv dd{padding:6px 12px;font-size:12px;border-bottom:1px solid ##313244;word-break:break-word;}
-##wheels-debugbar .wdb-kv dd code{font-family:'SF Mono',SFMono-Regular,Menlo,Consolas,monospace;background:##313244;padding:1px 5px;border-radius:3px;font-size:11px;}
-##wheels-debugbar .wdb-timing-row{display:flex;align-items:center;gap:8px;margin-bottom:6px;}
-##wheels-debugbar .wdb-timing-label{width:100px;font-size:12px;color:##a6adc8;text-align:right;}
-##wheels-debugbar .wdb-timing-bar-bg{flex:1;height:20px;background:##313244;border-radius:3px;overflow:hidden;position:relative;}
-##wheels-debugbar .wdb-timing-bar{height:100%;border-radius:3px;display:flex;align-items:center;padding-left:6px;font-size:10px;font-weight:600;color:##1e1e2e;min-width:30px;}
-##wheels-debugbar .wdb-close-btn{background:none;border:none;color:##a6adc8;cursor:pointer;font-size:18px;padding:4px 8px;border-radius:4px;line-height:1;}
-##wheels-debugbar .wdb-close-btn:hover{background:##45475a;color:##cdd6f4;}
-##wheels-debugbar .wdb-link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;padding:4px 0;}
-##wheels-debugbar .wdb-link-card{display:flex;align-items:center;gap:8px;padding:10px 12px;background:##313244;border-radius:6px;color:##cdd6f4;text-decoration:none;font-size:12px;font-weight:500;transition:background .15s;}
-##wheels-debugbar .wdb-link-card:hover{background:##45475a;}
-##wheels-debugbar .wdb-link-card svg{width:16px;height:16px;fill:##89b4fa;flex-shrink:0;}
-##wheels-debugbar .wdb-env-dot{width:8px;height:8px;border-radius:50%;display:inline-block;}
-##wheels-debugbar .wdb-section{margin-bottom:16px;}
-##wheels-debugbar .wdb-section-title{font-size:11px;font-weight:700;color:##89b4fa;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;padding-bottom:4px;border-bottom:1px solid ##313244;}
-</style>
+<style><cfinclude template="/wheels/public/assets/css/debugbar.css"></style>
 
 <!--- ============ COLLAPSED BAR ============ --->
 <div class="wdb-bar" id="wdb-bar">
@@ -517,53 +475,7 @@ OR (StructKeyExists(url, "format") AND ListFindNoCase("json,xml,csv,pdf", url.fo
 	</button>
 </div>
 
-<script>
-(function(){
-	var activePanel=null;
-	window.wdbToggle=function(name){
-		var panels=document.querySelectorAll('##wheels-debugbar .wdb-panel');
-		var tabs=document.querySelectorAll('##wheels-debugbar .wdb-tab');
-		if(activePanel===name){
-			wdbClosePanel();
-			return;
-		}
-		for(var i=0;i<panels.length;i++)panels[i].classList.remove('open');
-		var p=document.getElementById('wdb-panel-'+name);
-		if(p)p.classList.add('open');
-		for(var j=0;j<tabs.length;j++)tabs[j].classList.remove('active');
-		var t=document.getElementById('wdb-tab-'+name);
-		if(t)t.classList.add('active');
-		activePanel=name;
-	};
-	window.wdbClosePanel=function(){
-		var panels=document.querySelectorAll('##wheels-debugbar .wdb-panel');
-		var tabs=document.querySelectorAll('##wheels-debugbar .wdb-tab');
-		for(var i=0;i<panels.length;i++)panels[i].classList.remove('open');
-		for(var j=0;j<tabs.length;j++)tabs[j].classList.remove('active');
-		activePanel=null;
-	};
-	window.wdbMinimize=function(){
-		wdbClosePanel();
-		document.getElementById('wheels-debugbar').style.display='none';
-		document.getElementById('wdb-minimized').style.display='block';
-		try{sessionStorage.setItem('wdb-hidden','1');}catch(e){}
-	};
-	window.wdbRestore=function(){
-		document.getElementById('wheels-debugbar').style.display='';
-		document.getElementById('wdb-minimized').style.display='none';
-		try{sessionStorage.removeItem('wdb-hidden');}catch(e){}
-	};
-	window.wdbEnvSwitch=function(el){
-		var target=el.getAttribute('data-wdb-reload');
-		if(!target)return false;
-		var pw=window.prompt('Enter the reload password to switch environments:');
-		if(pw===null||pw==='')return false;
-		window.location.href=target+'&password='+encodeURIComponent(pw);
-		return false;
-	};
-	try{if(sessionStorage.getItem('wdb-hidden')==='1')wdbMinimize();}catch(e){}
-})();
-</script>
+<script><cfinclude template="/wheels/public/assets/js/debugbar.js"></script>
 </div>
-</cfoutput>
+</cfoutput></cfsavecontent><cfoutput>#ReReplace(local.wdbHtml, "(?m)>\s+<", "><", "all")#</cfoutput>
 <!--- cfformat-ignore-end --->
diff --git a/vendor/wheels/public/assets/css/debugbar.css b/vendor/wheels/public/assets/css/debugbar.css
@@ -0,0 +1,41 @@
+#wheels-debugbar *{box-sizing:border-box;margin:0;padding:0;}
+#wheels-debugbar{position:fixed;bottom:0;left:0;right:0;z-index:99999;font-size:13px;line-height:1.4;}
+#wheels-debugbar .wdb-bar{display:flex;align-items:center;background:#1e1e2e;color:#cdd6f4;height:36px;padding:0 8px;gap:2px;border-top:1px solid #45475a;user-select:none;}
+#wheels-debugbar .wdb-bar a,#wheels-debugbar .wdb-bar span{color:#cdd6f4;text-decoration:none;}
+#wheels-debugbar .wdb-tab{display:flex;align-items:center;gap:5px;padding:0 10px;height:36px;cursor:pointer;border:none;background:none;color:#cdd6f4;font-size:12px;font-family:inherit;white-space:nowrap;transition:background .15s;}
+#wheels-debugbar .wdb-tab:hover{background:#313244;}
+#wheels-debugbar .wdb-tab.active{background:#313244;color:#89b4fa;border-top:2px solid #89b4fa;padding-top:2px;}
+#wheels-debugbar .wdb-tab svg{width:14px;height:14px;fill:currentColor;flex-shrink:0;}
+#wheels-debugbar .wdb-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:9px;font-size:10px;font-weight:700;line-height:1;}
+#wheels-debugbar .wdb-badge-green{background:#28a74533;color:#a6e3a1;}
+#wheels-debugbar .wdb-badge-yellow{background:#ffc10733;color:#f9e2af;}
+#wheels-debugbar .wdb-badge-red{background:#dc354533;color:#f38ba8;}
+#wheels-debugbar .wdb-badge-blue{background:#89b4fa33;color:#89b4fa;}
+#wheels-debugbar .wdb-sep{width:1px;height:20px;background:#45475a;margin:0 4px;}
+#wheels-debugbar .wdb-spacer{flex:1;}
+#wheels-debugbar .wdb-panel{display:none;position:fixed;bottom:36px;left:0;right:0;max-height:50vh;background:#1e1e2e;border-top:1px solid #45475a;overflow-y:auto;color:#cdd6f4;padding:0;}
+#wheels-debugbar .wdb-panel.open{display:block;}
+#wheels-debugbar .wdb-panel-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid #313244;position:sticky;top:0;background:#1e1e2e;z-index:1;}
+#wheels-debugbar .wdb-panel-header h3{font-size:14px;font-weight:600;color:#cdd6f4;}
+#wheels-debugbar .wdb-panel-body{padding:12px 16px;}
+#wheels-debugbar .wdb-table{width:100%;border-collapse:collapse;}
+#wheels-debugbar .wdb-table th{text-align:left;padding:6px 12px;font-size:11px;font-weight:600;color:#a6adc8;text-transform:uppercase;letter-spacing:.5px;background:#181825;border-bottom:1px solid #313244;}
+#wheels-debugbar .wdb-table td{padding:6px 12px;border-bottom:1px solid #313244;font-size:12px;vertical-align:top;}
+#wheels-debugbar .wdb-table tr:hover td{background:#31324433;}
+#wheels-debugbar .wdb-kv{display:grid;grid-template-columns:180px 1fr;gap:0;}
+#wheels-debugbar .wdb-kv dt{padding:6px 12px;font-weight:600;color:#a6adc8;font-size:12px;border-bottom:1px solid #313244;}
+#wheels-debugbar .wdb-kv dd{padding:6px 12px;font-size:12px;border-bottom:1px solid #313244;word-break:break-word;}
+#wheels-debugbar .wdb-kv dd code{font-family:'SF Mono',SFMono-Regular,Menlo,Consolas,monospace;background:#313244;padding:1px 5px;border-radius:3px;font-size:11px;}
+#wheels-debugbar .wdb-timing-row{display:flex;align-items:center;gap:8px;margin-bottom:6px;}
+#wheels-debugbar .wdb-timing-label{width:100px;font-size:12px;color:#a6adc8;text-align:right;}
+#wheels-debugbar .wdb-timing-bar-bg{flex:1;height:20px;background:#313244;border-radius:3px;overflow:hidden;position:relative;}
+#wheels-debugbar .wdb-timing-bar{height:100%;border-radius:3px;display:flex;align-items:center;padding-left:6px;font-size:10px;font-weight:600;color:#1e1e2e;min-width:30px;}
+#wheels-debugbar .wdb-close-btn{background:none;border:none;color:#a6adc8;cursor:pointer;font-size:18px;padding:4px 8px;border-radius:4px;line-height:1;}
+#wheels-debugbar .wdb-close-btn:hover{background:#45475a;color:#cdd6f4;}
+#wheels-debugbar .wdb-link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;padding:4px 0;}
+#wheels-debugbar .wdb-link-card{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#313244;border-radius:6px;color:#cdd6f4;text-decoration:none;font-size:12px;font-weight:500;transition:background .15s;}
+#wheels-debugbar .wdb-link-card:hover{background:#45475a;}
+#wheels-debugbar .wdb-link-card svg{width:16px;height:16px;fill:#89b4fa;flex-shrink:0;}
+#wheels-debugbar .wdb-env-dot{width:8px;height:8px;border-radius:50%;display:inline-block;}
+#wheels-debugbar .wdb-section{margin-bottom:16px;}
+#wheels-debugbar .wdb-section-title{font-size:11px;font-weight:700;color:#89b4fa;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;padding-bottom:4px;border-bottom:1px solid #313244;}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		- The development debug bar's static CSS and JavaScript are now maintained as standalone files (`vendor/wheels/public/assets/css/debugbar.css`, `vendor/wheels/public/assets/js/debugbar.js`) and included into the bar, eliminating the CFML `##`-escaped inline blocks (a documented "unescaped `#` crashes the suite" hazard) and trimming the per-response debug payload via inter-tag whitespace collapse. The bar remains development-only and unchanged in production (#3210)
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		@@ -0,0 +1 @@
		- New apps scaffolded with `wheels new` now ship a `/up` liveness/warm-up endpoint (`app/controllers/Up.cfc` + route). `wheels deploy`'s proxy healthcheck already probes `/up` before traffic cutover, so the dispatch → controller → render path is compiled on a freshly deployed node before the first real visitor — moving the one-time cold-start compile (the bulk of first-request latency) off user traffic. The production-config guide documents the warm-up recipe and recommends setting the engine's template-inspection mode to `never` in production (#3210)
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		- The per-request action-dispatch gate now tests the protected-helper list with an O(1) `StructKeyExists` lookup instead of an O(n) `ListFindNoCase` scan over the ~100-250 framework helper names. A companion `application.wheels.protectedControllerMethodsLookup` struct-as-set is built once at application start alongside the existing comma-list (which is retained); case-insensitive matching is unchanged (#3210)
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		- Database column metadata is now memoized per datasource+table in `application.wheels.cache.schema` when `cacheDatabaseSchema` is on (the default). Previously every model class init issued a fresh `cfdbinfo type="columns"` JDBC catalog round-trip — a significant first-request cost on remote or wide-schema databases, re-paid on every reload and for every model sharing a table. The cache is rebuilt on reload, so schema changes are still picked up on reload (the same contract as the model and controller config caches) (#3210)