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# Monitoring Interceptor Add the monitoring interceptor to your basic set of LHC interceptors. ```ruby LHC.config.interceptors = [LHC::Monitoring] ``` You also have to configure statsd in order to have the monitoring interceptor report. ```ruby LHC::Monitoring.statsd = <your-instance-of-statsd> ``` The monitoring interceptor reports all the HTTP communication done with LHS. It reports the trial always. In case of a successful response it reports the response code with a count and the response time with a gauge value. ```ruby LHC.get('http://local.ch') "lhc.<app_name>.<env>.<host>.<http_method>.count", 1 "lhc.<app_name>.<env>.<host>.<http_method>.200", 1 "lhc.<app_name>.<env>.<host>.<http_method>.time", 43 ``` In case your workers/processes are getting killed due limited time constraints, you are able to detect deltas with relying on "before_request", and "after_request" counts: ```ruby "lhc.<app_name>.<env>.<host>.<http_method>.before_request", 1 "lhc.<app_name>.<env>.<host>.<http_method>.after_request", 1 ``` Timeouts are also reported: ```ruby "lhc.<app_name>.<env>.<host>.<http_method>.timeout", 1 ``` All the dots in the host are getting replaced with underscore (_), because dot is the default separator in graphite. It is also possible to set the key for Monitoring Interceptor on per request basis: ```ruby LHC.get('http://local.ch', monitoring_key: 'local_website') "local_website.count", 1 "local_website.200", 1 "local_website.time", 43 ``` If you use this approach you need to add all namespaces (app, environment etc.) to the key on your own.
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