Modules/stats add stale

added 1 commit

• e1f203a2 - put back accidentaly removed stat (metric_query_edns)

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added 1 commit

• c266aa81 - put back removed news from prev release

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resolved all threads

I think this MR is so simple that we'll do a squash-merge at the end. No need to keep this simple history forever.

added 10 commits

• c266aa81...3c71c0de - 4 commits from branch master
• 4f11486b - Add counter of stale responses
• fc4894fc - Update kres-gen after adding a flag to kr_request
• 310018de - moved assignment of stale_accounted flag to the correct place
• bb0327e1 - update stats news, change log_debug in case of serving stale to log_qry and print name of query
• 403171b1 - put back accidentaly removed stat (metric_query_edns)
• 9df21a8f - put back removed news from prev release, resolve merge conflict

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Looks good to me, including the CI. The only thing occurring to me:

• extend docs: https://www.knot-resolver.cz/documentation/artifacts/1150979/dev/modules-stats.html#built-in-statistics

added 1 commit

• 8374e698 - add sum_stale statistic to doc

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mentioned in merge request !1592 (merged)

added 10 commits

• 8374e698...380e4d8f - 3 commits from branch master
• 3fee2ba8 - Add counter of stale responses
• 328c8c63 - Update kres-gen after adding a flag to kr_request
• 29e3ae1c - moved assignment of stale_accounted flag to the correct place
• b4504342 - update stats news, change log_debug in case of serving stale to log_qry and print name of query
• 3b586b36 - put back accidentaly removed stat (metric_query_edns)
• 7ff56f4f - put back removed news from prev release, resolve merge conflict
• f19b4684 - add sum_stale statistic to doc

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added 1 commit

• 09203d0d - modules/serve_stale: nits

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added 1 commit

• 0bd9231f - modules/serve_stale: sync to manager, too

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merged

mentioned in commit e6411386