EU SaaS with Arctickey

SaaS products often need fast shared state for sessions, rate limits, queues, feature flags, and cache. Arctickey keeps the Redis-compatible layer simple while keeping customer instance data in EU regions.

Common SaaS Workloads#

WorkloadRecommended patternGDPR note
SessionsOpaque session IDs with TTLAvoid personal data in keys
Tenant cachePrefix by tenant IDKeep TTL short for derived data
Usage countersAtomic incrementsStore counters, not raw events
Background jobsQueue IDs and minimal payloadsKeep personal data out of long-lived jobs
Feature flagsHashes or simple keysTreat tenant targeting as customer metadata

Tenant Key Design#

Use stable opaque identifiers:

Terminal
SETEX tenant:t_123:session:s_789 86400 "{...}" INCR tenant:t_123:usage:api:2026-05-25 HSET tenant:t_123:flags beta_dashboard true

Avoid names, email addresses, or company names in keys when an internal ID is enough.

EU Readiness Checklist#

  • Use EU-hosted app infrastructure next to Arctickey where possible.
  • Define TTLs for sessions, invitations, password reset tokens, and caches.
  • Keep a map from user IDs to Valkey keys that may need deletion.
  • Request a DPA before processing personal data in production.
  • Document Arctickey as a processor in your own vendor inventory.

Operational Tips#

  • Use separate instances for production, staging, and development.
  • Use separate key prefixes for each tenant and workload.
  • Keep queue payloads small and fetch sensitive records from your primary database when the job runs.
  • Monitor memory growth caused by missing TTLs.