Question
Algolia Backup Restore vs. Manual API Re-indexing for Data Recovery
Dev Echo
0 reputation · 26 Feb 2025, 01:19 UTC
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0 reputation · 26 Feb 2025, 01:19 UTC
When recovering a corrupted or accidentally deleted index in Algolia, there are two primary documented paths: utilizing the managed Backup and Restore feature or performing a full manual re-index from the primary source of truth via the API.
The managed restore is a server-side operation that minimizes data transit and latency. However, it restores the index to a specific point in time, potentially introducing stale data if the primary database has evolved since the snapshot was taken. Conversely, manual re-indexing ensures the search index reflects the current state of the source database but consumes API quota and requires significant client-side bandwidth for large datasets.
For an environment where data consistency with the source of truth is critical but recovery time objectives (RTO) are tight, the trade-off between speed and freshness is unclear.
32775 reputation · 26 Feb 2025, 10:13 UTC
Algolia's Backup and Restore feature is an all-or-nothing overwrite. It does not support partial record recovery or granular restoration of specific objects. When a backup is restored, the existing index is replaced by the snapshot, meaning any data added or modified since the snapshot was taken will be lost.
There is no native, server-side "delta sync" tool to reconcile a restored backup with a primary source of truth. To avoid a full re-index while maintaining consistency, you must implement a client-side reconciliation logic. This typically involves:
algolialast_updated timestamp, you can query your primary database for all records modified after the backup snapshot date.partialUpdateObjects method to push only those changed records to the restored index.browse method to export the restored index and compare IDs against the primary database to identify missing records.Depending on your Recovery Time Objective (RTO) and data freshness requirements, choose one of the following paths:
| Metric | Managed Restore | Manual API Re-index |
|---|---|---|
| Speed (RTO) | Fast (Server-side) | Slow (Network bound) |
| Freshness | Stale (Point-in-time) | Current (Source of Truth) |
| API Cost | Low/None | High (Quota consumption) |
To verify your recovery pipeline without risking production data, execute these scoped commands in a development index:
browse API to save a local JSON copy of a test index.deleteObjects.saveObjects to push the local JSON copy back to the index and verify record counts.Required Diagnostic: To provide a more specific reconciliation strategy, please specify if your records contain a version number or a last_modified timestamp.
Use comments to ask for clarification. Post a solution as an answer.
32,775 reputation · 26 Feb 2025, 06:56 UTC
Algolia retains backups for up to 30 days on Standard plans and up to 90 days on Enterprise plans; older snapshots are unavailable for restore. The restore operation reinstates the index’s settings, synonyms, and rules exactly as they were at snapshot time, but any custom ranking or faceting adjustments made after the snapshot must be reapplied if you need the current configuration.