v1.0.0-rc.3

New features

• Meter filters - allow for ignoring tags, adding common tags, ignoring whole metrics, etc at a registry level
• Replaced histogram and quantiles implementations with HdrHistogram
• Servlet metrics are recorded with a servlet Filter instead of HandlerInterceptor (metrics are now recorded for resources blocked by spring-security)
• HierarchicalNameMapper is now customizable for Etsy-flavored StatsD
• DatadogMeterRegistry matches the naming convention of dogstatsd
• Fluent builders for FunctionCounter and FunctionTimer
• Support collecting max for Prometheus timers
• Add processor metrics binder to the list of default binders autoconfigured by Spring
• Create DEFAULT for each registry implementation's config interface
• Add host property to datadog config so that traffic can pass through a proxy
• Meta-annotation support for @timed
• Add record method that accepts Duration to Timer

Fixes

• Servlet request metrics report the targetted URI in the event of an error rather than /error
• Adjust metric name for "system load average"
• Logback - MetricsTurboFilter no longer increments stats when is<LEVEL>Enabled() is called.
• Properly synchronize metrics creation (the symptom previously was duplicate lines in Prometheus output)
• Fixed file descriptor metrics names to match Prometheus standard
• Description is present for all meters registered to Prometheus
• Rename autoconfigured clock beans in Spring to avoid naming collisions
• Ensure MeterRegistryConfigurers are run before autoconfigured binders
• Add StringToDurationConverter to Prometheus configuration
• Fix erroneously set description set as baseunit for ThreadPoolExecutor