Solving Spot GPU Eviction Context Loss with Kernel-Level eBPF Socket Hijacking

Anton John Intes — Mon, 28 Sep 2026 18:02:59 +0000

Solving Spot GPU Eviction Context Loss with Kernel-Level eBPF Socket Hijacking

Running LLM inference (vLLM/TGI) or model training on spot GPU instances offers huge cost savings, but a single provider reclamation signal can drop active TCP streams and wipe un-checkpointed sequence state.

To eliminate this data loss, we built ApexSovereign—a bare-metal GPU orchestration mesh engineered in Rust and Axum that handles spot failovers at the Linux kernel level.

Architecture Breakdown

1. eBPF Socket Hijacking (`BPF_MAP_TYPE_SOCKHASH`)

When a spot node receives an eviction signal from the data center provider, user-space proxies and DNS updates are too slow.

By utilizing eBPF maps (BPF_MAP_TYPE_SOCKHASH) and attaching sk_skb stream parsers:

Active socket descriptors are updated directly in kernel space upon receiving an eviction signal.
Reroute latency drops to 1.67ms – 2.31ms.
TCP connections remain open with zero client-side socket resets.

Building an Autonomous Compute Brokerage Engine with FastAPI and Supabase

Anton John Intes — Thu, 24 Sep 2026 11:39:11 +0000

Managing multi-provider compute allocations manually introduces unnecessary operational friction when scaling AI workloads, LLM inference, and automated backend execution.

To streamline this process, I built and brought live ApexSovereign.ai—an autonomous compute brokerage engine designed to unify compute metering, double-entry financial ledgering, and sub-second API routing under a single system.

Technical Architecture & Stack

Here is how the platform is architected to operate with zero fixed infrastructure overhead:

FastAPI (Python 3): Serves as our primary backend web service deployed on Render. Route handlers run via modularized startup entrypoints to maintain strict uptime execution and prevent module loading errors.
Supabase PostgreSQL: Handles double-entry financial accounting via custom ledger_entries tables alongside structured system audit logs (audit_events).
Live Financial Settlement: Integrated direct PayPal Business settlement rails, allowing real-time compute credit purchasing and instant ledger logging.
Edge Routing: Vercel frontend proxy handling client-side requests and proxying traffic seamlessly to our backend engine.

Public Health & Diagnostic Verification

To ensure platform availability, we exposed a public health matrix endpoint that validates active database bindings and gateway connections on every poll:

Live Platform: https://www.apexsovereign.ai
Public Health Matrix: https://www.apexsovereign.ai/v1/platform/health-matrix

Pilot Application Program

Our Pilot Gateway is officially open for teams requiring automated compute brokerage or specialized API routing. Submit an application directly through our site to get provisioned keys!

I'd love to hear feedback from the DEV community on our double-entry ledger schema, FastAPI route design, and routing setup.

DEV Community: Anton John Intes

Solving Spot GPU Eviction Context Loss with Kernel-Level eBPF Socket Hijacking

Solving Spot GPU Eviction Context Loss with Kernel-Level eBPF Socket Hijacking

Architecture Breakdown

1. eBPF Socket Hijacking (BPF_MAP_TYPE_SOCKHASH)

Building an Autonomous Compute Brokerage Engine with FastAPI and Supabase

Technical Architecture & Stack

Public Health & Diagnostic Verification

Pilot Application Program

1. eBPF Socket Hijacking (`BPF_MAP_TYPE_SOCKHASH`)