Definition
What is disaster recovery for PrestaShop 1.6?
Disaster recovery for PrestaShop 1.6 is the set of systems and decisions that keep a PrestaShop 1.6 store taking orders when its primary environment fails.
A traditional plan restores the store from a backup onto rebuilt infrastructure. That takes hours or days and loses everything since the last snapshot. A live replica approach keeps a second, current copy of the store running and isolated, so failover is a switch rather than a rebuild.
The two approaches answer different questions. A backup answers "can we get the data back?". A live replica answers "can customers keep buying while we deal with this?". For a PrestaShop 1.6 store the business depends on, the second question is the one that costs money every minute it stays unanswered.
Why now
Why PrestaShop 1.6 disaster recovery changed on June 30, 2019
Vendor support is the quiet half of every disaster recovery plan. As long as a vendor ships patches, most incidents are prevented before they happen. End of maintenance came on June 30, 2019, so there is no vendor patch coming for the next vulnerability. Every incident that a patch would have prevented now has to be survived instead.
The facts that matter for a PrestaShop 1.6 store today:
- Maintenance for PrestaShop 1.6 ended on June 30, 2019. The 1.6.1.x branch is officially end of life with no further development.
- 1.6 depends on PHP versions that are themselves end of life, so the whole stack under the store is unpatched.
- Many 1.6 modules were never ported forward, so the move to 8.x is a rebuild of the module set as much as a data migration.
Failure modes
Where PrestaShop 1.6 stores actually fail
Disaster recovery planning tends to imagine fires and floods. Real PrestaShop 1.6 outages are more mundane and more frequent. The failure modes that a plan for PrestaShop 1.6 has to cover:
- Exploited module vulnerabilities used to inject card skimmers, a pattern that has hit PrestaShop stores repeatedly.
- Hosting providers retiring the PHP versions 1.6 needs.
- A failed server with no reproducible build.
- Ransomware reaching the store and its backups.
- The backup itself: stored on the same host or account, encrypted alongside production, or restored with the intrusion still inside it.
The replica
Why a live replica beats restoring PrestaShop 1.6 from backup
Four things change when the store has a live, isolated copy instead of a snapshot on a shelf.
Zero recovery time, because nothing is recovered
The replica is already running. When the primary fails, customers are switched to the copy in seconds. There is no rebuild, no restore window and no scramble to find the person who knows how the store was configured.
Zero data loss, because the copy is current
The replica follows the primary continuously rather than nightly. Orders placed on the replica during an outage are captured and reconciled back when the primary returns.
Ransomware cannot follow
The replica is isolated from the primary's hosting account, network and credentials. An attacker who owns production has no path into the copy, and you never restore from a snapshot that might carry the infection with it.
Unpatched is survivable when it is not a single point of failure
PrestaShop 1.6 will not receive another vendor fix. The replica does not change that, but it changes the cost of the next vulnerability: the exposed primary can be taken down to contain an incident while the isolated replica keeps customers buying.
How it works
How the Jestr replica works for a PrestaShop 1.6 store
Jestr does not re-implement PrestaShop 1.6. It runs a copy of your actual store, kept current and kept apart.
Jestr builds a live copy of the store
Jestr replicates the PrestaShop 1.6 store as it actually runs: the application, its data and its configuration, at the exact version and with the exact dependencies the primary uses. Nothing is re-implemented, so what customers see on the replica is the store they know.
The copy stays current and stays isolated
The replica follows the primary continuously, at a known-good state, so an update that breaks production does not break the copy. It runs on Jestr's side of the outage with no shared credentials, network or identity, so a compromise of the primary stops at the primary.
When the primary fails, you switch
One action moves customers to the replica. They browse the same catalog, sign in to the same accounts and check out. Orders are captured on the replica. The switch works even when your own network is the thing that is down.
When the primary is back, you reconcile and switch back
Orders and account changes made on the replica are reconciled into the restored primary. You choose when to switch back. Nothing was lost and no backup was restored.
What the replica captures for PrestaShop 1.6
- Products, combinations, categories, images and CMS pages.
- Customer accounts and the checkout path, with orders captured and reconciled.
- The legacy runtime and module set kept current and isolated from the primary.
- Separation from the primary's hosting credentials and network.
Side by side
Backup and restore vs a live PrestaShop 1.6 replica
The same outage, handled two ways.
| Dimension | Traditional backup and restore | Live Jestr replica |
|---|---|---|
| Time until customers are served again | Hours to days: provision, restore, reconfigure, test | Seconds: the replica is already running |
| Data lost | Everything since the last snapshot, often a full day | Nothing: the replica is current, and changes made during the outage are reconciled back |
| Ransomware | Backups often sit in the blast radius, and a restore can bring the infection back | The replica is isolated; you switch to it instead of restoring into the compromise |
| Unpatched platform | Every new vulnerability is permanent and the only copy is exposed | The exposed primary can be contained while the isolated replica serves customers |
| Rehearsal | Rarely tested, because a full restore is disruptive and slow | Switching to the replica is routine and can be rehearsed any time |
| Who does the work at 3am | Your team, from a runbook that may be out of date | The switch is one action; the copy was built and kept current in advance |
FAQ
Frequently asked questions
Does Jestr replace our PrestaShop 1.6 backups?
No. Keep backups for archives, audits and long-term retention. Jestr replaces the part of the plan that backups are bad at: keeping the store selling while the primary is down, without a restore window and without data loss.
Can customers actually check out on the replica during an outage?
Yes. The replica runs the real PrestaShop 1.6 store, including the cart and checkout path. Orders placed during the outage are captured and reconciled to the primary when it returns. Payment and fulfillment integrations are configured as part of onboarding.
How is ransomware kept out of the replica?
The replica shares nothing with the primary that an attacker could use: no credentials, no network path, no hosting account. Replication is one-way and validated, so an encrypted or tampered primary does not propagate. You switch to a clean copy instead of restoring into the compromise.
How fast is failover?
Seconds. The replica is already running and current, so failover is the act of pointing customers at it. There is no provisioning, restoring or reconfiguring in the critical path.
Is it safe to keep running PrestaShop 1.6 at all now that end of maintenance has passed?
Safer than it looks, if the exposure is managed. The replica does not patch the software, but it means the exposed primary is no longer the only copy. When a vulnerability is disclosed, the primary can be restricted or taken down to contain it while the isolated replica keeps customers buying. Unpatched is survivable when it is not also a single point of failure.
