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Visualization and monitoring solutions  /  Monitor Varnish Cache
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Monitor Varnish Cache easily with Grafana

Easily monitor your deployment of Varnish Cache, an open source web application accelerator, with Grafana Cloud’s out-of-the-box monitoring solution. The Grafana Cloud forever-free tier includes 3 users and up to 10k metrics series to support your monitoring needs.

Key metrics included

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varnish_backend_beresp_bodybytes
varnish_backend_beresp_hdrbytes
varnish_main_backend_busy
varnish_main_backend_conn
varnish_main_backend_recycle
varnish_main_backend_req
varnish_main_backend_reuse
varnish_main_backend_unhealthy
varnish_main_cache_hit
varnish_main_cache_hitpass
varnish_main_cache_miss
varnish_main_client_req
varnish_main_n_expired
varnish_main_n_lru_nuked
varnish_main_pools
varnish_main_s_resp_bodybytes
varnish_main_s_resp_hdrbytes
varnish_main_sessions
varnish_main_sessions_total
varnish_main_thread_queue_len
varnish_main_threads
varnish_main_threads_created
varnish_main_threads_failed
varnish_main_threads_limited
varnish_sma_g_bytes
varnish_sma_g_space

Key alerting rules included

VarnishCacheLowCacheHitRate (Warning)
VarnishCacheHighMemoryUsage (Warning)
VarnishCacheHighCacheEvictionRate (Critical)
VarnishCacheHighSaturation (Warning)
VarnishCacheSessionsDropping (Critical)
VarnishCacheBackendUnhealthy (Critical)