Apache 2.4 sending old pages - apache

Question

I have an apache 2.4 server, which serves a file called resource.js.
When I request the resource, it returns an old page. My browser does not send an ETAG or Last-Modified header in the request, presumably because it doesn't have this resource cached.
Here's a snippet of the HAR when this happens
{
"startedDateTime": "2014-04-30T21:01:36.384Z",
"time": 0,
"request": {
"method": "GET",
"url": "https://someserver/resource.js",
"headers": [
{
"name": "User-Agent",
"value": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36"
}
],
"queryString": [],
"cookies": [],
"headersSize": -1,
"bodySize": 0
},
"response": {
"status": 200,
"statusText": "OK",
"httpVersion": "HTTP/1.1",
"headers": [
{
"name": "Date",
"value": "Wed, 30 Apr 2014 20:46:57 GMT"
},
{
"name": "Last-Modified",
"value": "Thu, 24 Apr 2014 23:42:51 GMT"
},
{
"name": "Server",
"value": "Apache/2.4.4 (Unix) OpenSSL/1.0.1 PHP/5.4.12"
},
{
"name": "ETag",
"value": "\"e00-4f7d2684c7fb9\""
},
{
"name": "Content-Type",
"value": "application/javascript"
},
{
"name": "Connection",
"value": "Keep-Alive"
},
{
"name": "Accept-Ranges",
"value": "bytes"
},
{
"name": "Keep-Alive",
"value": "timeout=5, max=98"
},
{
"name": "Content-Length",
"value": "3584"
}
],
"cookies": [],
"content": {
"size": 3584,
"mimeType": "application/javascript",
"text": "...."
},
"redirectURL": "",
"headersSize": 318,
"bodySize": 0
},
"cache": {},
"timings": {
"blocked": -1,
"dns": -1,
"connect": -1,
"send": 0,
"wait": 0,
"receive": 0,
"ssl": -1
},
"connection": "48540",
"pageref": "page_1"
},
I know it's an old page, because I can verify the content of the page is not what is on the server. Also, note that the response returns an ETAG (that is wrong) and a Last-Modified date that's 7 days old when I modified this file today.
On the subsequent request though, the apache server returns the right page, after the ETAG and Last-Modified headers are submitted as part of the request:
{
"startedDateTime": "2014-04-30T21:03:02.771Z",
"time": 490.7269477844238,
"request": {
"method": "GET",
"url": "https://someserver/resource.js",
"httpVersion": "HTTP/1.1",
"headers": [
{
"name": "Cookie",
"value": "__utma=37592696.1580400495.1393617937.1393617937.1394060568.2; __utmz=37592696.1393617937.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); m=1933:60%7C5|2491:chart|34e2:|4e71:small"
},
{
"name": "Accept-Encoding",
"value": "gzip,deflate,sdch"
},
{
"name": "Host",
"value": "someserver"
},
{
"name": "Accept-Language",
"value": "en-US,en;q=0.8"
},
{
"name": "User-Agent",
"value": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36"
},
{
"name": "Accept",
"value": "*/*"
},
{
"name": "Cache-Control",
"value": "max-age=0"
},
{
"name": "If-None-Match",
"value": "\"e00-4f7d2684c7fb9\""
},
{
"name": "Connection",
"value": "keep-alive"
},
{
"name": "If-Modified-Since",
"value": "Thu, 24 Apr 2014 23:42:51 GMT"
},
{
"name": "Referer",
"value": "https://someserver"
}
],
"queryString": [],
"cookies": [
{
"name": "__utma",
"value": "37592696.1580400495.1393617937.1393617937.1394060568.2",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "__utmz",
"value": "37592696.1393617937.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "m",
"value": "1933:60%7C5|2491:chart|34e2:|4e71:small",
"expires": null,
"httpOnly": false,
"secure": false
}
],
"headersSize": 667,
"bodySize": 0
},
"response": {
"status": 200,
"statusText": "OK",
"httpVersion": "HTTP/1.1",
"headers": [
{
"name": "Date",
"value": "Wed, 30 Apr 2014 21:03:03 GMT"
},
{
"name": "Last-Modified",
"value": "Wed, 30 Apr 2014 21:01:19 GMT"
},
{
"name": "Server",
"value": "Apache/2.4.4 (Unix) OpenSSL/1.0.1 PHP/5.4.12"
},
{
"name": "ETag",
"value": "\"8bd-4f848d99ceae4\""
},
{
"name": "Content-Type",
"value": "application/javascript"
},
{
"name": "Connection",
"value": "Keep-Alive"
},
{
"name": "Accept-Ranges",
"value": "bytes"
},
{
"name": "Keep-Alive",
"value": "timeout=5, max=100"
},
{
"name": "Content-Length",
"value": "2237"
}
],
"cookies": [],
"content": {
"size": 2237,
"mimeType": "application/javascript",
"compression": 0,
"text": "..."
},
"redirectURL": "",
"headersSize": 321,
"bodySize": 2237
},
"cache": {},
"timings": {
"blocked": 2.418000000034226,
"dns": 69.07200000023295,
"connect": 182.09600000045612,
"send": 0.08100000013655517,
"wait": 235.99800000010873,
"receive": 1.0619477834552526,
"ssl": 181.40800000037416
},
"connection": "49670",
"pageref": "page_2"
},
And as expected, on the 3rd request, the ETAG and Last-Modified are good so the apache server sends back a 304 response code:
{
"startedDateTime": "2014-04-30T21:14:56.248Z",
"time": 138.21721076965332,
"request": {
"method": "GET",
"url": "https://someserver/resource.js",
"httpVersion": "HTTP/1.1",
"headers": [
{
"name": "If-None-Match",
"value": "\"8bd-4f848d99ceae4\""
},
{
"name": "Accept-Encoding",
"value": "gzip,deflate,sdch"
},
{
"name": "Host",
"value": "someserver"
},
{
"name": "Accept-Language",
"value": "en-US,en;q=0.8"
},
{
"name": "User-Agent",
"value": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36"
},
{
"name": "Accept",
"value": "*/*"
},
{
"name": "Referer",
"value": "https://someserver"
},
{
"name": "Cookie",
"value": "__utma=37592696.1580400495.1393617937.1393617937.1394060568.2; __utmz=37592696.1393617937.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); m=1933:60%7C5|2491:chart|34e2:|4e71:small"
},
{
"name": "Connection",
"value": "keep-alive"
},
{
"name": "If-Modified-Since",
"value": "Wed, 30 Apr 2014 21:01:19 GMT"
}
],
"queryString": [],
"cookies": [
{
"name": "__utma",
"value": "37592696.1580400495.1393617937.1393617937.1394060568.2",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "__utmz",
"value": "37592696.1393617937.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)",
"expires": null,
"httpOnly": false,
"secure": false
},
{
"name": "m",
"value": "1933:60%7C5|2491:chart|34e2:|4e71:small",
"expires": null,
"httpOnly": false,
"secure": false
}
],
"headersSize": 653,
"bodySize": 0
},
"response": {
"status": 304,
"statusText": "Not Modified",
"httpVersion": "HTTP/1.1",
"headers": [
{
"name": "Date",
"value": "Wed, 30 Apr 2014 21:14:56 GMT"
},
{
"name": "ETag",
"value": "\"8bd-4f848d99ceae4\""
},
{
"name": "Server",
"value": "Apache/2.4.4 (Unix) OpenSSL/1.0.1 PHP/5.4.12"
},
{
"name": "Connection",
"value": "Keep-Alive"
},
{
"name": "Keep-Alive",
"value": "timeout=5, max=100"
}
],
"cookies": [],
"content": {
"size": 2237,
"mimeType": "application/javascript",
"text": "..."
},
"redirectURL": "",
"headersSize": 203,
"bodySize": 0
},
"cache": {},
"timings": {
"blocked": 5.732999999963795,
"dns": -1,
"connect": -1,
"send": 0.07100000038917642,
"wait": 118.89599999994971,
"receive": 13.51721076935064,
"ssl": -1
},
"connection": "51334",
"pageref": "page_1"
},
If anyone knows why the first request returns the wrong page, please let me know.