ChangeLog

Version 2.0.0 (2025-11-17)

Major rewrite of the metric exporter. This drastically reduce the memory consumption, notably on long running instances.
More robust unmarshalling of varnishstat output.
Unknown metric names get sanitized replacing illegal characters with underscores.
Metrics RLCOL.(<collection>).accounts are now renamed varnish.rlcol.accounts{collection.name=<collection>}

New histograms:

varnish.backend.duration.connection
varnish.backend.duration.total
varnish.backend.duration.ttfb
varnish.backend.request.bytes
varnish.backend.response.bytes
varnish.client.duration.total
varnish.client.duration.ttfb
varnish.client.duration.waitlist
varnish.client.request.bytes
varnish.client.response.bytes

Version 1.2.0 (2025-08-19)

Fix crash when parsing an invalid req.url

Version 1.1.0 (2025-07-31)

VCL can opt out of tracing using std.log("otel-tracing: false") to disable tracing for a specific transaction all its dependents.
environment variables OTEL_TRACES_OPT_IN_ATTRIBUTES now accepts true and false for consistency with the other variable. on/off are still valid but will be deprecated at a later date.

Multiple counter translations have been added or changed:

Counter name	new Otel name
`MSE4_MEM.g_objects_ephemeral`	`varnish.mse4.objects_ephemeral`
`BROTLI.c_br_bytes_in`	`varnish.brotli.byte.in`
`BROTLI.c_br_bytes_out`	`varnish.brotli.byte.out`
`BROTLI.c_br_fail`	`varnish.brotli.fail`
`BROTLI.c_br`	`varnish.brotli.compressions`
`BROTLI.c_testunbr_fail`	`varnish.brotli.test.decompression.fail`
`BROTLI.c_testunbr`	`varnish.brotli.test.decompression`
`BROTLI.c_unbr_bytes_in`	`varnish.brotli.decompression.byte.in`
`BROTLI.c_unbr_bytes_out`	`varnish.brotli.decompression.byte.out`
`BROTLI.c_unbr_fail`	`varnish.brotli.decompression.fail`
`BROTLI.c_unbr`	`varnish.brotli.decompressions`
`MAIN.bans_added`	`varnish.main.ban.added`
`MAIN.bans_completed`	`varnish.main.ban.completed`
`MAIN.bans_deleted`	`varnish.main.ban.deleted`
`MAIN.bans_dups`	`varnish.main.ban.dups`
`MAIN.bans_lurker_contention`	`varnish.main.ban.lurker.contention`
`MAIN.bans_lurker_obj_killed_cutoff`	`varnish.main.ban.lurker.obj.killed.cutoff`
`MAIN.bans_lurker_obj_killed`	`varnish.main.ban.lurker.obj.killed`
`MAIN.bans_lurker_tested`	`varnish.main.ban.lurker.tested`
`MAIN.bans_lurker_tests_tested`	`varnish.main.ban.lurker.test.tested`
`MAIN.bans_obj_killed`	`varnish.main.ban.obj.killed`
`MAIN.bans_obj`	`varnish.main.ban.obj`
`MAIN.bans_req`	`varnish.main.ban.req`
`MAIN.bans_tested`	`varnish.main.ban.tested`
`MAIN.bans_tests_tested`	`varnish.main.ban.test.tested`
`MAIN.c_ykey_purges_slicer`	`varnish.main.ykey.purges_slicer`
`MAIN.goto_dns_lookup_fails`	`varnish.main.goto.dns.lookup.failed`
`MAIN.http1_iovs_flush`	`varnish.main.http1.iov.flush`
`MAIN.task_track_failed`	`varnish.main.task_track.failed`
`MAIN.task_track_slots`	`varnish.main.task_track.slots`
`MAIN.vcl_fail`	`varnish.main.vcl.failed`
`MSE.mse.c_bytes`	`varnish.mse3.byte.allocated`
`MSE.mse.c_freed`	`varnish.mse3.byte.freed`
`MSE.mse.c_ykey_purged_slicer`	`MSE.mse.c_ykey_purged_slicer`
`MSE.mse.c_ykey_purged`	`MSE.mse.c_ykey_purged`
`MSE.mse.g_alloc`	`varnish.mse3.allocator.outstanding`
`MSE.mse.g_bytes`	`varnish.mse3.byte.used`
`MSE.mse.g_space`	`varnish.mse3.byte.unused`
`MSE4_BANJRN.<book_name>.g_bans`	`varnish.mse4.ban.persisted`
`MSE4_BANJRN.<book_name>.g_bytes`	`varnish.mse4.byte.used`
`MSE4_BANJRN.<book_name>.g_space`	`varnish.mse4.byte.unused`
`MSE4_BOOK.<book_name>.c_objects_liberated`	`varnish.mse4.book.liberated`
`MSE4_BOOK.<book_name>.c_slot_liberation_failure`	`varnish.mse4.book.liberation_failed`
`MSE4_BOOK.<book_name>.c_ykey_purged_slicer`	`varnish.mse4.book.ykey.slicer_purged`
`MSE4_BOOK.<book_name>.c_ykey_purged`	`varnish.mse4.book.ykey.purged`
`MSE4_BOOK.<book_name>.c_ykey_stats_slicer`	`varnish.mse4.book.ykey.stats_slicer`
`MSE4_BOOK.<book_name>.c_ykey_stats`	`varnish.mse4.book.ykey.stats`
`MSE4_BOOK.<book_name>.g_slots_unused`	`varnish.mse4.book.slot.unused`
`MSE4_BOOK.<book_name>.g_slots_used`	`varnish.mse4.book.slot.used`
`MSE4_BOOK.<book_name>.g_ykey_bytes`	`varnish.mse4.book.ykey.bytes`
`MSE4_BOOK.<book_name>.g_ykey_keys`	`varnish.mse4.book.ykey.keys`
`MSE4_BOOK.<book_name>.g_ykey_nodes`	`varnish.mse4.book.ykey.nodes`
`MSE4_MEM.g_bytes_buffer`	`varnish.mse4.byte.buffer`
`MSE4_MEM.g_bytes_ephemeral`	`varnish.mse4.byte.ephemeral`
`MSE4_MEM.g_bytes_pass`	`varnish.mse4.byte.pass`
`MSE4_MEM.g_bytes_persisted`	`varnish.mse4.byte.persisted`
`MSE4_MEM.g_bytes_reqbody`	`varnish.mse4.byte.reqbody`
`MSE4_MEM.g_bytes_synthetic`	`varnish.mse4.byte.synthetic`
`MSE4_MEM.g_bytes`	`varnish.mse4.byte.used`
`MSE4_MEM.g_objects_ephemeral`	`varnish.mse4.object.ephemeral`
`MSE4_MEM.g_objects_pass`	`varnish.mse4.object.pass`
`MSE4_MEM.g_objects_persisted`	`varnish.mse4.object.persisted`
`MSE4_MEM.g_objects_reqbody`	`varnish.mse4.object.reqbody`
`MSE4_MEM.g_objects_synthetic`	`varnish.mse4.object.synthetic`
`MSE4_MEM.g_objects`	`varnish.mse4.object.used`
`MSE4_MEM.g_space`	`varnish.mse4.byte.unused`
`MSE4_STORE.<book_name>.<store_name>.c_segment_prune_fail`	`varnish.mse4.store.prune_failed`
`MSE4_STORE.<book_name>.<store_name>.c_segment_prune`	`varnish.mse4.store.prunes`
`MSE4_STORE.<book_name>.<store_name>.c_segment_pruned_objects`	`varnish.mse4.store.pruned_objects`
`MSE4_STORE.<book_name>.<store_name>.c_segment_remap_fail`	`varnish.mse4.store.remap_failed`
`MSE4_STORE.<book_name>.<store_name>.c_segment_remap`	`varnish.mse4.store.remaps`
`MSE4_STORE.<book_name>.<store_name>.g_bytes_unused`	`varnish.mse4.store.byte.unused`
`MSE4_STORE.<book_name>.<store_name>.g_bytes_used`	`varnish.mse4.store.byte.used`
`MSE_BOOK.<book_name>.g_banlist_bytes`	`varnish.mse3.book.banlist.byte.used`
`MSE_BOOK.<book_name>.g_banlist_space`	`varnish.mse3.book.banlist.byte.unused`
`MSE_BOOK.<book_name>.g_bytes`	`varnish.mse3.book.byte.used`
`MSE_BOOK.<book_name>.g_space`	`varnish.mse3.book.byte.unused`
`MSE_STORE.<store_name>.c_aio_finished_bytes_write`	`varnish.mse3.store.aio.finished.byte.writes`
`MSE_STORE.<store_name>.g_alloc_<extent_size>_bytes`	`varnish.mse3.store.byte.used`
`MSE_STORE.<store_name>.g_alloc_<extent_size>_extents`	`varnish.mse3.store.extent.used`
`MSE_STORE.<store_name>.g_alloc_bytes`	`varnish.mse3.store.byte.all.used`
`MSE_STORE.<store_name>.g_alloc_extents`	`varnish.mse3.store.extent.all.used`
`MSE_STORE.<store_name>.g_free_<extent_size>_bytes`	`varnish.mse3.store.byte.unused`
`MSE_STORE.<store_name>.g_free_<extent_size>_extents`	`varnish.mse3.store.extent.unused`
`MSE_STORE.<store_name>.g_free_bytes`	`varnish.mse3.store.byte.all.unused`
`MSE_STORE.<store_name>.g_free_extents`	`varnish.mse3.store.extent.all.unused`

Version 1.0.0 (2025-06-30)

Initial Release.