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24 lines
1.4 KiB
Markdown
24 lines
1.4 KiB
Markdown
# Prometheus
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imgproxy can collect its metrics for Prometheus. To use this feature, do the following:
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1. Set `IMGPROXY_PROMETHEUS_BIND` environment variable. Note that you can't bind the main server and Prometheus to the same port;
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2. _(optional)_ Set `IMGPROXY_PROMETHEUS_NAMESPACE` to prepend prefix to the names of metrics.
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I.e. with `IMGPROXY_PROMETHEUS_NAMESPACE=imgproxy` names will look like `imgproxy_requests_total`.
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3. Collect the metrics from any path on the specified binding.
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imgproxy will collect the following metrics:
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* `requests_total` - a counter of the total number of HTTP requests imgproxy processed;
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* `errors_total` - a counter of the occurred errors separated by type (timeout, downloading, processing);
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* `request_duration_seconds` - a histogram of the response latency (seconds);
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* `download_duration_seconds` - a histogram of the source image downloading latency (seconds);
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* `processing_duration_seconds` - a histogram of the image processing latency (seconds);
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* `buffer_size_bytes` - a histogram of the download/gzip buffers sizes (bytes);
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* `buffer_default_size_bytes` - calibrated default buffer size (bytes);
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* `buffer_max_size_bytes` - calibrated maximum buffer size (bytes);
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* `vips_memory_bytes` - libvips memory usage;
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* `vips_max_memory_bytes` - libvips maximum memory usage;
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* `vips_allocs` - the number of active vips allocations;
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* Some useful Go metrics like memstats and goroutines count.
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