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A master and terminology workers on one machine (replaces #336) - #342

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jmandel wants to merge 26 commits into

HealthIntersections:mainfrom

jmandel:cluster-lite

Draft

A master and terminology workers on one machine (replaces #336)#342
jmandel wants to merge 26 commits into
HealthIntersections:mainfrom
jmandel:cluster-lite

Commits on Nov 4, 2026
- server: --role=master|tx-worker, and with no role nothing changes
  
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- tx-worker: the master keeps $closure and the syndication store; own local source caches
  
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- VSAC: the workers catch up with the master's sync by a generation counter
  
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- memory guard: with a role, measure the cgroup, and abort only in its largest process
  
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- cluster.js: a master and N tx-workers behind one port
  
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- docs: cluster.md (roles, what runs where, routing, the launcher, memory); nginx.md example
  
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- cluster.js: don't pass Expect on to the process
  
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- $expand: hash each cache-id resource once, not on every expansion
  
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- worker: read a supplement's canonical through CodeSystem.supplementsUrl
  
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- server.cluster.sharedCache: the $cache-control caches in one SQLite file every process shares
  
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- $closure: a shared mode, with version-checked writes instead of a lock across processes
  
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- server.cluster.sharedClosure: every tx process answers $closure
  
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- tests: count closure retries in logs/server.log only (the dated log is a copy)
  
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- docs: cluster.md "Options": sharedCache, cacheAffinity, sharedClosure
  
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- tx-worker: read the package caches the master built; never build or migrate one
  
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- Mime types: download the IANA registry to a temporary file of the process's own
  
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- cluster.js: close an idle connection to a process before the process does
  
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- tx-worker: read the IANA media types registry the master downloaded; never download it
  
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- tx-worker: read the master's folder:/file: source caches; never build one
  
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- Keep shared closure identities unique across resets
  
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- Reject changed resources during shared-cache lazy loading
  
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- Test VSAC database settings for both cluster roles
  
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- Document shared cache and closure conflict responses
  
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- Show cluster process graphs and reset shared caches on full restart
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Commits on Nov 5, 2026
- Make cluster charts comparable and show memory refusals
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  767a03c
- Merge main at e6a9f38d into cluster-lite
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  4ac6d31

Commits

Commits on Nov 4, 2026

Commits on Nov 5, 2026