dbs:
  - path: ./data/shard_0.db
    replicas:
      - type: s3
        bucket: my-litejoin-backups
        path: shard_0
        region: us-east-1
        sync-interval: 1s

  - path: ./data/shard_1.db
    replicas:
      - type: s3
        bucket: my-litejoin-backups
        path: shard_1
        region: us-east-1
        sync-interval: 1s

  # ... one entry per shard (match your shard_count)

#!/bin/bash
# run.sh — restore shards, then start Litestream with LiteJoin

# Restore all shards from replica (skips if local file exists)
for i in $(seq 0 7); do
  litestream restore -if-db-not-exists \
    -o ./data/shard_$i.db \
    s3://my-litejoin-backups/shard_$i
done

# Start Litestream replicate, exec LiteJoin as child process
exec litestream replicate -exec "litejoin run -c litejoin.yaml"

FROM golang:1.24-alpine AS build
RUN apk add --no-cache gcc musl-dev
WORKDIR /app
COPY . .
RUN CGO_ENABLED=1 go build -o litejoin ./cmd/litejoin

FROM alpine:3.21
RUN apk add --no-cache litestream ca-certificates
COPY --from=build /app/litejoin /usr/local/bin/
COPY litestream.yml /etc/litestream.yml
COPY run.sh /run.sh
RUN chmod +x /run.sh
ENTRYPOINT ["/run.sh"]

replication:
  enabled: true
  mode: "sidecar"
  replica_url: "s3://my-bucket/litejoin"
  sync_interval: 1s
  restore_on_boot: true
  snapshot_interval: 1h
  retention: 72h

s3://my-bucket/litejoin/
├── shard_0/
│   └── generations/
│       └── a1b2c3d4/
│           ├── snapshots/
│           └── wal/
├── shard_1/
│   └── ...
├── ...
└── dlq/
    └── ...   # DLQ database also replicated