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SC-Substrate v1.1.0 — Developer Workload Modules
This minor release introduces three developer-focused computation modules targeting real-world systems engineering and high-throughput backend workloads. Each module serves as a thin orchestration layer composing existing certified crates—introducing zero new unsafe code and maintaining a strict 0-cycle monotonic dependency graph.
🚀 What's New in v1.1.0
1. Certified SLA & Latency Enclosures (sc-cas/sysperf)
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End-to-End Latency Propagation: Rigorous Arb ball jitter containment
$[T_{\text{mean}} \pm \delta]$ across distributed microservice call hops. -
Queueing Capacity Explosion: Automated boundary modeling via Little's Law (
$L = \lambda W$ ) and$M/M/c$ queue sizing. -
SLO Error Budget Assurance: Formal proof bounds verifying tail latency targets (
$p99 / p99.9$ ) prior to deployment. -
Differential Privacy Egress: Native Laplace noise injection via
sc-cas/privacybefore telemetry and APM export.
2. Cache Alignment & Memory Layout Safety (sc-cas/layout)
- False-Sharing Elimination: Automatic struct packing and padding optimization tailored for 64-byte CPU cache lines.
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Modular Buffer Addressing: RNS/CRT-accelerated ring-buffer offset rotation via
sc-cas/rns. -
Construction-Time Bounds Proof: Machine-checked invariant proving array slicing
$f(i) \in [0, N-1]$ to permanently prevent out-of-bounds panics.
3. Lossless Exact Rate Limiting (sc-cas/rates)
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Drift-Free Token Bucket: Replaced floating-point intervals with exact rational fill rates
$R = \frac{N}{T}$ viasc-cas/core::Rational. - Exact Leaky Bucket Dynamics: Precise burst capacity sizing and drain rate arithmetic.
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Zero Hot-Path Overhead: Rate-limiting evaluation rules JIT-compiled directly into native stencils via
sc-cas/jit.
🛡️ Verification & Quality Seal
- Unit & Integration Tests: 42 / 42 passed
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Clippy Audit: 0 warnings (
-D warningsenforced) -
Architecture Distance: Monotonic downward acyclic flow (
$Cycle = 0, D \le 0.10$ ) - Security & Attestation: NIST FIPS 204 ML-DSA-65 post-quantum signing & Blake3 verification on all releases
Full Changelog & Architecture Manual: See README.md and Developer & Integration Manual.