diff --git a/html/planeObject.js b/html/planeObject.js
index b77bcde..1f593d7 100644
--- a/html/planeObject.js
+++ b/html/planeObject.js
@@ -861,6 +861,16 @@ PlaneObject.prototype.processTrace = function(options) {
             }
         }
     }
+    if (this.fullTrace && this.fullTrace.trace
+        && this.recentTrace && this.recentTrace.trace) {
+        let t1 = this.fullTrace.trace;
+        let t2 = this.recentTrace.trace;
+        let end1 = this.fullTrace.timestamp + t1[t1.length-1][0];
+        let start2 = this.recentTrace.timestamp;
+        if (end1 < start2)
+            console.log("Insufficient recent trace overlap!");
+    }
+
 
     for (let j = 0; j < 2; j++) {
         if (j == 0) {
diff --git a/nginx.conf b/nginx.conf
index 2dd5918..c9166af 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -7,12 +7,12 @@ location /INSTANCE/data/ {
   location /INSTANCE/data/traces/ {
     location ~ trace_recent {
       gzip off;
-      add_header Cache-Control "public, max-age=10";
+      add_header Cache-Control "public, max-age=5";
       add_header Content-Encoding "gzip";
     }
     location ~ trace_full {
       gzip off;
-      add_header Cache-Control "public, max-age=60";
+      add_header Cache-Control "public, max-age=120";
       add_header Content-Encoding "gzip";
     }
   }