Reliability and recovery

Failure is an operating state. Silent loss is not.

SQL Flow gives every captured batch a durable address and every destination an independent cursor, with explicit recovery behavior.

The job to be done

Move committed data with a path your team can explain.

A capability matters when it removes an operational decision, not when it adds another checkbox. SQL Flow connects source-aware capture, durable progress, target apply, and validation so the page you are reading leads to a usable operating path.

Segmented storage uses versioned frames, compression, grouped fsync, sparse indexes, and torn-tail recovery. Retention and encryption are explicit. SQL Flow handles atomic append groups and source positions; checksummed segment recovery; retention, backpressure, and eviction policy; optional at-rest encryption.

Why this path matters

The backlog has structure and a recovery path.

Segmented storage uses versioned frames, compression, grouped fsync, sparse indexes, and torn-tail recovery. Retention and encryption are explicit. SQL Flow handles atomic append groups and source positions; checksummed segment recovery; retention, backpressure, and eviction policy; optional at-rest encryption.

What changes for you

Retry isolates transient failures. Binary splitting narrows a bad batch, dead letters preserve evidence, and idempotent paths absorb replay. SQL Flow handles destination-specific retry policy; poison-record isolation; checkpointed pause and resume; explicit delivery semantics per path.

The outcome

Bring outage windows, retention, target idempotency, and failure policy. We will map recovery.

The payoff

See what the capability changes.

Fsync

Durable frontier

Acknowledgement never outruns persisted changes.

N cursors

Independent recovery

Each sink restarts from its own progress.

Explicit

Failure policy

Retry, dead-letter, backpressure, or reseed.

Where the work happens

The details that make the result usable.

Read each capability as part of the operating path. The important question is not whether a feature exists, but what work it removes and what evidence it leaves behind.

Durable spool

The backlog has structure and a recovery path.

Segmented storage uses versioned frames, compression, grouped fsync, sparse indexes, and torn-tail recovery. Retention and encryption are explicit.

SQL Flow handles atomic append groups and source positions; checksummed segment recovery; retention, backpressure, and eviction policy; optional at-rest encryption.

  • Atomic append groups and source positions
  • Checksummed segment recovery
  • Retention, backpressure, and eviction policy
  • Optional at-rest encryption

Apply resilience

Advance only after the sink contract succeeds.

Retry isolates transient failures. Binary splitting narrows a bad batch, dead letters preserve evidence, and idempotent paths absorb replay.

SQL Flow handles destination-specific retry policy; poison-record isolation; checkpointed pause and resume; explicit delivery semantics per path.

  • Destination-specific retry policy
  • Poison-record isolation
  • Checkpointed pause and resume
  • Explicit delivery semantics per path

Before you choose

Check the path against your environment.

Use the page-specific details below as a short discovery checklist. They are the conditions and work areas that shape the capability, not generic product promises.

  • Atomic append groups and source positions
  • Checksummed segment recovery
  • Retention, backpressure, and eviction policy
  • Optional at-rest encryption
  • Destination-specific retry policy
  • Poison-record isolation

The path to confidence

See the work. Make the call. Prove the result.

The page keeps the product detail close to the decision it supports. Your team can see what the software handles automatically, what it changes for the target, and what the result leaves ready to operate.

  1. The backlog has structure and a recovery path.

    Segmented storage uses versioned frames, compression, grouped fsync, sparse indexes, and torn-tail recovery. Retention and encryption are explicit. SQL Flow handles atomic append groups and source positions; checksummed segment recovery; retention, backpressure, and eviction policy; optional at-rest encryption.

  2. Advance only after the sink contract succeeds.

    Retry isolates transient failures. Binary splitting narrows a bad batch, dead letters preserve evidence, and idempotent paths absorb replay. SQL Flow handles destination-specific retry policy; poison-record isolation; checkpointed pause and resume; explicit delivery semantics per path.

Keep the plan connected

Take the next useful step.

A capability becomes easier to operate when the next decision follows from the constraint you just uncovered. Explore the related work that completes this part of the path.

Your working set

What this page leaves you with

  • Durable frontier
  • Independent recovery
  • The backlog has structure and a recovery path.
  • Advance only after the sink contract succeeds.
  • Choose recovery behavior before you need it.

Take the next step

Choose recovery behavior before you need it.

Bring outage windows, retention, target idempotency, and failure policy. We will map recovery.

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