High-Volume AEM CS CDN Log Analysis, Fully In-Browser.
AEM CS CDN Log Analyzer
Upload an xxx.log.gz (or plain .log) file. Analysis stays in your browser and
processes logs line by line for reliable, memory-safe insights at scale.
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Choose a .log.gz or .log file to begin.
Brief Overview
CDN Log Overview
AEM as a Cloud Service provides CDN publish logs for analysis tasks such as cache hit ratio optimization. The CDN log format is JSON-based and this tool does not support any other log format.
Example Log Line
{
"timestamp": "2023-05-26T09:20:01+0000",
"ttfb": 19,
"cli_ip": "147.160.230.112",
"cli_country": "CH",
"rid": "974e67f6",
"req_ua": "Mozilla/5.0 ... Safari/605.1.15",
"host": "example.com",
"url": "/content/hello.png",
"method": "GET",
"res_ctype": "image/png",
"cache": "PASS",
"status": 200,
"res_age": 0,
"pop": "PAR",
"rules": "match=...,waf=SQLI,action=blocked"
}Log Fields
| Field Name | Description |
|---|---|
timestamp | Time the request started after TLS termination. |
ttfb | Time To First Byte. |
cli_ip | Client IP address. |
cli_country |
Two-letter ISO 3166-1 alpha-2 country code. |
rid | Request identifier used to uniquely identify the request. |
req_ua | User-Agent responsible for the HTTP request. |
host | Request authority/host. |
url | Full path including query parameters. |
method | HTTP method (GET, POST, etc.). |
res_ctype | Response Content-Type. |
cache | Cache state: HIT, MISS, or PASS. |
status | HTTP status code. |
res_age | Age of cached response in seconds. |
pop | CDN datacenter / point-of-presence. |
rules |
Matched traffic filter / WAF rule metadata, including block actions when applicable. |
CDN logs can also be extended with custom properties using request/response transformations.
Optimizing CDN Cache Configuration
After analyzing your CDN logs, tune cache rules to improve site performance. AEM best practice is to target a cache hit ratio of 90% or higher for cacheable traffic.