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Comparison · Infra & APIs

JointFPM vs Skipper

A side-by-side editorial comparison of JointFPM and Skipper — release velocity, themes, recent moves, and the top alternatives to consider.

JointFPM vs Skipper: at a glance

FeatureJointFPMSkipper
SectorInfra & APIsInfra & APIs
Velocity score0.05.0
Sparks · 30d00
Top themessurvival-analysis, recurrent-events, parametric-models, api-stabilityreverse-proxy, kubernetes, memory-footprint, zone-aware-routing
Last editorial update1h ago13h ago
WebsiteVisit →Visit →

What is JointFPM?

Recurrent-event modelling settles, with mean_no() promoted to stable.

JointFPM fits joint flexible parametric models for a recurrent event process alongside a competing terminal event, and predicts the mean number of events. The visible history runs from bug fixes on the earliest CRAN releases through standardization, integration options and a summary method, ending with mean_no() declared stable. Several changes arrived through outside pull requests.

Read the full JointFPM trajectory →

What is Skipper?

Skipper trims a 4x memory regression out of routesrv, days after shipping h2c

Zalando's HTTP router ships patch tags almost daily, and most carry a single dependency bump or a one-line auth fix. The substance in this window is v0.27.63, which stops routesrv holding an uncompressed route tree alongside the compressed buffer: retained memory in the release's own benchmark falls from 30.7 MB to 2.0 MB, undoing most of the 4x increase zone-aware routing had introduced. Around it sit narrow auth repairs, and an eskip parser change that finally accepts negative numeric arguments in predicates and filters.

Read the full Skipper trajectory →

JointFPM vs Skipper: editorial side-by-side

J
JointFPM
INFRA · APIS
0.0

Recurrent-event modelling settles, with mean_no() promoted to stable.

◆ Current state

JointFPM fits joint flexible parametric models for a recurrent event process alongside a competing terminal event, and predicts the mean number of events. The visible history runs from bug fixes on the earliest CRAN releases through standardization, integration options and a summary method, ending with mean_no() declared stable. Several changes arrived through outside pull requests.

◆ Where it's heading

The arc runs from a working estimator toward a usable one: input validation and error messages first, then control over the numerical integration, then a summary method and pass-through arguments to the underlying rstpm2 fit. The latest release adds no code so much as a stability commitment to a function users were already calling.

◆ Prediction

With mean_no() stable, the next work most likely targets the prediction and standardization paths rather than the model fit itself.

S
Skipper
INFRA · APIS
5.0

Skipper trims a 4x memory regression out of routesrv, days after shipping h2c

◆ Current state

Zalando's HTTP router ships patch tags almost daily, and most carry a single dependency bump or a one-line auth fix. The substance in this window is v0.27.63, which stops routesrv holding an uncompressed route tree alongside the compressed buffer: retained memory in the release's own benchmark falls from 30.7 MB to 2.0 MB, undoing most of the 4x increase zone-aware routing had introduced. Around it sit narrow auth repairs, and an eskip parser change that finally accepts negative numeric arguments in predicates and filters.

◆ Where it's heading

Two threads run through the recent tags. The data path keeps getting real work - leastRequests balancing, then h2c end to end in v0.27.57, now the memory cost of zone-aware routing being paid back. The auth filters, by contrast, are only being maintained: token introspection, grant auth, and now the OIDC Referer handling are fixes rather than new capability, and several are follow-ups to each other rather than independent bugs.

◆ Prediction

Zone-aware routing looks like the source of the recent memory attention, so expect further tuning around route storage and the hash computation done on every pull, which the release's second benchmark already isolates. The OIDC cookie change is the second link in an auth chain that started with the grant-auth fix, and is likely to draw another follow-up.

Alternatives to JointFPM and Skipper

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either JointFPM or Skipper.

See all JointFPM alternatives → · See all Skipper alternatives →

Recent activity from JointFPM and Skipper

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoSkipperMove OIDC flow protection from Referer to cookies
  2. 1d agoSkipperv0.27.63: Store routes compressed-only, decompress on demand (#4198)
  3. 1d agoSkipperEskip predicates and filters accept negative numbers
  4. 2d agoSkipperFix token introspection handling
  5. 2d agoSkipperFix grant auth flow
  6. 2d agoSkipperUpdate outdated golang.org/x dependencies
  7. 1y agoJointFPMmean_no() promoted to a stable interface
  8. 2y agoJointFPMsummary() method and control arguments passed to rstpm2
  9. 2y agoJointFPMGaussian quadrature option for the mean-events integration
  10. 2y agoJointFPMStandardized marginal estimates plus input validation
  11. 2y agoJointFPMBug fixes for differences between mean-event functions

Frequently asked questions

What is the difference between JointFPM and Skipper?

They serve adjacent needs but don't currently overlap on shipped themes. Skipper is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is JointFPM better than Skipper?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Skipper is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to JointFPM?

Top JointFPM alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "JointFPM alternatives" section above for the current picks, or visit /alternatives/jointfpm for the full list with editorial commentary on each.

What are the best alternatives to Skipper?

Top Skipper alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Skipper alternatives" section above for the current picks, or visit /alternatives/skipper for the full list with editorial commentary on each.