2026-04-20·2 min readawsspot
April 22: What Happens When a Ceasefire Expires
The two-week ceasefire expires April 22. Three scenarios for engineering teams with spot workloads in ME regions.
ENGINEERING BLOG
Signal Intelligence
How RefineX thinks about spot markets, suppression logic, and infrastructure cost signals.
2026-04-15·2 min readawsspot
The Ceasefire Was Not a Signal
The April 8 ceasefire did not restore the ME-CENTRAL-1 confidence band. Here is what the data shows and why engineering teams should not conflate diplomacy with infrastructure recovery.
2026-04-14·3 min readawsspot
When the Data Center Is in a War Zone
On March 1, banking apps went offline across the UAE. The cause was not a software bug. Buildings that house cloud infrastructure were physically damaged.
2026-03-30·4 min readawsspot
Why Every Spot Signal Has an Expiry Date
RefineX expires every Spot signal after 15 minutes. Stale pricing data creates historical trivia, not actionable signals.
2026-03-29·3 min readawsspot
Two Signal Types, One API: Arbitrage vs Interruption Risk
How RefineX delivers spot arbitrage and interruption risk signals through unified endpoints with different detection logic and actions.
2026-03-28·4 min readawsspot
Two pip installs. Live AWS spot data in Claude Code and your terminal.
refinex-mcp wraps the RefineX REST API as 6 MCP tools for Claude Code and Cursor. refinex-cli puts the same live AWS spot data in your terminal. Both on PyPI today.
2026-03-28·4 min readawsspot
How RefineX Detects Volatile Spot Regions as Interruption Risk
When coefficient of variation exceeds 25% in normalized price history, RefineX flags regions as interruption risk rather than arbitrage opportunity.
2026-03-15·4 min readawsspot
Why /signals/active Returns One Action, Not a List
RefineX /signals/active returns one highest-confidence action with fallback, not a list. Why autoscalers benefit from opinionated APIs that make exactly one recommendation.
2026-03-14·3 min readawsspot
Why We Deduplicate Spot Signals at the Detection Layer
RefineX deduplicates spot arbitrage signals at detection to prevent autoscaler noise. Six-hour clustering window updates existing signals rather than creating duplicates.
2026-03-08·5 min readawsspot
How We Score Spot Confidence in 3 Deterministic Signals
Most spot tools treat confidence scoring as a black box. RefineX computes it from three measurable inputs with no machine learning and no probabilistic guessing.
2026-03-01·4 min readawsspot
Confidence Bands vs Binary Signals: Why Most Spot Tools Give You a Coin Flip
Binary buy/avoid recommendations ignore the most important variable in spot market arbitrage — how confident the signal actually is. Here is what that costs you.
2026-02-28·3 min readawsspot
Why We Suppress 85% of Our Own Spot Signals
Most spot market tools optimize for signal volume. We optimize for survivability. Here is why suppression rate is the metric that matters.