FunctionFoundry is a modular collection of independent, production-grade .NET libraries that provide specialized capabilities not supplied by the BCL or common Microsoft packages.
Each library ships as its own DLL and NuGet package. There is no mandatory aggregate package and no shared runtime "commons" dependency between core packages. Nuget Packages: https://www.nuget.org/packages?q=functionfoundry
Each product has a dedicated README under src/<Package>/README.md describing exactly what it does.
| Package | Purpose | README |
|---|---|---|
FunctionFoundry.Security |
Envelope encryption, HKDF key derivation, deterministic pseudonymization, threshold secret sharing, key-rotation planning | README |
FunctionFoundry.Storage |
Transactional file-set writes, content-addressed storage with GC, content-defined chunking, Merkle file-tree diffs | README |
FunctionFoundry.Integrity |
Canonical JSON, hash manifests, Merkle proofs/multiproofs, tamper-evident hash chains | README |
FunctionFoundry.Observability |
Sensitive-data redaction, event fingerprinting, adaptive sampling, burst coalescing, cardinality limiting | README |
FunctionFoundry.Data |
External merge sort, k-way sorted merge, structural tree diff, three-way merge, temporal interval join | README |
FunctionFoundry.Text |
Unicode spoof detection, homoglyph normalization, secret scanning, near-duplicate indexing, delimited-text dialect inference | README |
FunctionFoundry.Resilience |
Adaptive concurrency, hedged execution, execution budgets, checkpointed batch execution, retry budgets | README |
FunctionFoundry.Networking |
Resumable parallel downloads, Content-Range parsing, mirror selection, transfer planning, streaming integrity verification | README |
FunctionFoundry.Distributed |
Weighted rendezvous hashing, version clocks, hybrid logical clocks, phi-accrual failure detection, quorum aggregation | README |
FunctionFoundry.Scheduling |
Interval-set algebra, recurring availability, business calendars, critical-path scheduling | README |
- .NET SDK 10.0.302 (pinned in
global.json; roll-forward disabled) - Target framework:
net10.0 - C# 14.0
SDK versions receive explicit maintenance upgrades only. Do not silently change the pinned feature band.
Local dotnet pack produces *-local package versions by design. Release packs (CI or FF_RELEASE_PACK=true / publish workflow) omit the suffix.
dotnet restore
dotnet build -c Release
dotnet test -c Release
dotnet pack -c ReleaseTo produce a top-level Release/ folder with library binaries and NuGet packages:
# Linux / macOS
./build/publish-release.sh
# Windows
build\publish-release.cmdCoverage (optional):
dotnet test -c Release --collect:"XPlat Code Coverage" --results-directory ./artifacts/test-resultsIntermediate build outputs remain under artifacts/. Release deliverables are copied to Release/ (gitignored). Coverage breakdown: docs/coverage-summary.md.
- Specialized functions with nontrivial algorithms, protocols, or guarantees
- Zero third-party runtime dependencies by default
- Independent package consumption
- Complete XML documentation
- Deterministic builds and reproducible packages where the SDK supports it
Licensed under the Apache License, Version 2.0 — free to use commercially and non-commercially, with attribution required.
When you use FunctionFoundry, retain the copyright notices and credit FunctionFoundry as described in LICENSE and NOTICE.