feat(backend): Redis cache for quote Soroban simulations - #273
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jhayniffy merged 2 commits intoMar 29, 2026
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- SHA-256 keys from sorted normalized GeneratePremiumDto + contract + network
- Store only successful source=simulation results; TTL via QUOTE_SIMULATION_CACHE_TTL_SECONDS (default 30s)
- Cache-Control: no-cache bypasses cache; counter quote_simulation_cache_requests_total{result}
- Invalidate quote:sim:v1:* on indexer niffyins:tbl_upd (parseEvent)
- Fix claims.controller missing class brace, indexer duplicate handleClaimFiled
- Fix throttler Redis storage import path and ThrottlerStorageRecord type import
- app.module: import RedisService and RedisThrottlerStorage for ThrottlerModule factory
- Docs: quote-simulation-cache.md; observability metric table
- Tests: cache key util + integration with in-memory TTL Redis mock
Made-with: Cursor
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Summary
Adds a short-TTL Redis cache for successful Soroban
generate_premiumsimulations behindPOST /api/quote/generate-premium, keyed by a SHA-256 of normalized quote inputs plus contract id and network passphrase. Reduces duplicate RPC work for identical quotes within the TTL window.closes #203
What changed
Quote simulation cache
quote:sim:v1:+ SHA-256(CONTRACT_ID+STELLAR_NETWORK_PASSPHRASE+ canonical JSON with sorted fields:age,coverage_tier,policy_type,region,risk_score,source_account).source: "simulation"only — notlocal_fallback, not thrown errors (avoids caching transient failures).env.validation.ts):QUOTE_SIMULATION_CACHE_ENABLED(defaulttrue),QUOTE_SIMULATION_CACHE_TTL_SECONDS(default 30, max 600).Cache-Controlheader containing theno-cachedirective skips Redis read/write.quote_simulation_cache_requests_total{result="hit"|"miss"|"bypass"}.delPatternwhenparseEventreturnsniffyins:tbl_upd(multiplier table update).Files
quote-simulation-cache-key.util.ts,quote-simulation-cache.service.tsquote.service.ts,quote.controller.ts,quote.module.ts(exports cache service for indexer)indexer.service.ts/indexer.module.ts— invalidation hookmetrics.service.ts— new counterdocs/quote-simulation-cache.md,docs/observability.mdTests
quote-simulation-cache-key.util.test.ts— canonical JSON + hash stabilityquote-simulation-cache.integration.test.ts— hit, miss, bypass, TTL expiry, no cache forlocal_fallback(in-memory TTL Redis mock)