Sentrix Indexer (Rust)

Rust rewrite of the Sentriscloud/indexer TypeScript indexer, with Redis cache and ClickHouse analytics layers added.

Status: Code-complete through spec Phase 9 (deploy artifacts shipped). Phases 10/11 are operator actions (dual-run cutover + TS decom). See Development phases below for what landed.

Why

• Drop indexer-worker CPU footprint to <10 % (TS hits ~36 % on the same host).
• Replace Node v8 GC pauses with predictable Tokio scheduling.
• Single-binary deploy, no Node runtime.
• Redis cache + ClickHouse analytics from day one.
• Compile-time SQL checks via sqlx.

Spec

Full design lives in the operator-private spec — 20 sections, 10-pass internal review, every phase has acceptance criteria.

Workspace

crates/
├── domain/ shared types (Block, Tx, Log, BigInt wrappers)
├── db/ sqlx pool + migrations + query helpers
├── chain/ SentrixClient — alloy provider + tonic stream + REST tx fetch
├── handlers/ log decoders (ERC-20/721/1155) + dispatch registry
├── coinblast/ curve detection + applyTrade SQL transaction
├── sync/ backfill + tail + reorg + cursor + single-flight
├── cache/ Redis cache-aside + tiers + invalidation
├── analytics/ ClickHouse batch buffer + flusher
└── api/ axum routes + GraphQL + Etherscan compat
bin/
├── indexer.rs ingest worker entry point
└── api.rs HTTP server entry point
migrations/ sqlx migrations ported from drizzle
crates/chain/ gRPC client wrapping the sentrix-proto crate (crates.io); schema lives upstream
snapshots/ golden test corpora (api JSON, ingest pg_dump)
docker/ Dockerfiles + docker-compose

Reference stack

Concern	Crate
Async runtime	tokio (multi-thread)
HTTP server	axum 0.8
JSON-RPC	alloy-provider 0.7
gRPC	tonic 0.14 + prost 0.14
Postgres	sqlx 0.8 with query! compile-time checks
Redis	fred 9
ClickHouse	clickhouse-rs 0.13
GraphQL	async-graphql 7
Logging	tracing + tracing-subscriber (json)
Metrics	metrics-exporter-prometheus

Build

cargo build --release
cargo test --workspace # 30+ unit tests
cargo clippy --workspace --all-targets -- -D warnings
cargo deny check

Run

Two binaries, both env-configured (figment reads from Env::raw()):

# API server — REST + GraphQL
DATABASE_URL=postgres://indexer:indexer@localhost:5432/indexer \
INDEXER_API_BIND=0.0.0.0:8080 \
./target/release/api
# Sync + CoinBlast worker daemon
DATABASE_URL=postgres://indexer:indexer@localhost:5432/indexer \
RPC_URL=https://rpc.sentrixchain.com \
GRPC_URL=https://grpc.sentrixchain.com:443 \
INDEXER_NETWORK=mainnet \
CLICKHOUSE_URL=http://localhost:8123 \
./target/release/indexer

Or via Docker compose (postgres + indexer + api wired):

cp compose.env.example compose.env # add your secrets
docker compose up -d
curl http://127.0.0.1:8080/health # {"ok":true}

API surface

REST (snake_case keys, bigint stringified, mirrors TS Fastify port):

Path	Description
GET /health	Liveness — {"ok":true}
GET /blocks?limit&before	Latest blocks, newest-first
GET /blocks/:height	Block detail with nested transactions
GET /tx/:hash	Transaction detail with logs
GET /address/:addr/txs?limit	Address tx history
GET /address/:addr/transfers?limit&standard	Token-transfer history
GET /accounts/active?limit	Top senders by tx count
GET /whale/transfers?limit	Top txs by value

GraphQL:

Path	Description
POST /graphql	Schema: block(height), blocks(first, before), transaction(hash)
GET /graphql/playground	GraphiQL UI

Development phases

• ✅ Phase 0 — workspace bootstrap
• ✅ Phase 1 — domain + db (newtypes, Wei, schema mirroring TS drizzle)
• ✅ Phase 2 — chain client (alloy provider + tonic gRPC + native REST + retry)
• ✅ Phase 3 — sync core (backfill + tail + reorg + cursor + single-flight)
• ✅ Phase 4 — CoinBlast worker (factory + curve event handlers + orphan adoption)
• ✅ Phase 5 — REST API (axum, byte-fidelity with TS Fastify port)
• ✅ Phase 6 — GraphQL (async-graphql + GraphiQL playground)
• ✅ Phase 7 — Redis cache (fred-9, 3-tier TTL, circuit breaker)
• ✅ Phase 8 — ClickHouse analytics (RawTxRow + buffered flusher)
• ✅ Phase 9 — Dockerfile + docker-compose + bin runtime wiring
• 🔜 Phase 10 — dual-run with TS indexer for ≥1 week zero-diff (operator)
• 🔜 Phase 11 — cutover + decommission TS (operator)

License

BUSL-1.1, transitioning to Apache-2.0 on 2030-05-11. See LICENSE.