[improve][broker] Add pulsar_subscription_storage_backlog_age_seconds metric - #26313

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Technoboy- wants to merge 8 commits into

apache:masterfrom

Technoboy-:add-sub-backlog

Commits on Aug 11, 2026

init impl
Technoboy-
committed
1842505

Commits on Aug 12, 2026

[fix][broker] Reuse subscription backlog age cache
Technoboy-
committed
f974639
[test][broker] Add subscription backlog age coverage
Technoboy-
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835d8fc

Commits on Aug 17, 2026

[fix][broker] Gate subscription backlog age stats
Technoboy-
committed
7151190
[fix][broker] Reuse subscription backlog age before backlog scan
Technoboy-
committed
e68b429

Commits on Aug 22, 2026

Address comment
Technoboy-
committed
cbe4683
Update doc
Technoboy-
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f41f59c
[test][broker] Refresh subscription backlog age in non-precise test
Technoboy-
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ebce29a