BEGINNER · 12 MIN · FREE LESSON
RDS Aurora & Cloud SQL
Explore rds aurora & cloud sql through a visual, step-by-step model.
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BEGINNER · 12 MIN · FREE LESSON
Explore rds aurora & cloud sql through a visual, step-by-step model.
Loading interactive lesson…
Operations are reads/writes on replicas A/B. Strong mode requires both replicas; eventual mode serves locally; session mode waits rather than violating its client’s observed version. delay controls async delivery. partitionAt/healAt are operation indices; -1 disables the event. AWS: RDS / Aurora concepts. GCP: Cloud SQL concepts. This generic register is not an RDS, Aurora or Cloud SQL failover implementation. AWS RDS Multi-AZ, Aurora storage/read endpoints and Google Cloud SQL HA/read replicas have distinct topologies and guarantees; consult the selected service design. No cloud resources are created.
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RDS / Aurora concepts: State the guarantee before judging a stale or unavailable response.
CAP concerns behavior during a network partition: this two-replica strong policy rejects operations without both replicas, while eventual policy serves local state that can diverge. Without a partition, synchronous coordination still adds modeled latency (PACELC). Session tokens enforce only the modeled client’s read-your-writes and monotonic-version requirements; they are not global linearizability.
Read/write operations attempted, seed 42. Plotted sample sizes respect each lesson’s explicit input limits.
Keyboard: Space play/pause · ←/→ step · R restart · 1–5 speed. Reduced motion disables transitions.
A managed database still has explicit replication, read and failover guarantees.
Choose AWS or GCP mapping, change one validated model parameter and load the trace. Provider labels identify concepts; the model never provisions resources or calls a provider account.
Use a two-register consistency model to distinguish waiting for both copies, local eventual progress and session monotonicity. Explore delayed delivery and a network partition before discussing a concrete managed database architecture.
AWS: RDS / Aurora concepts. GCP: Cloud SQL concepts. This generic register is not an RDS, Aurora or Cloud SQL failover implementation. AWS RDS Multi-AZ, Aurora storage/read endpoints and Google Cloud SQL HA/read replicas have distinct topologies and guarantees; consult the selected service design.
Partition replicas, compare acknowledged writes and session reads, then heal and inspect convergence. Separate standby failover from read-replica use. Predict the next modeled decision before advancing.
Use the displayed measured operation and explicit bounds. Simulator operations, service quotas, network latency and cloud billing are different measurements. Validate production capacity using the selected product and workload.
The four references implement the core local state model. Provider annotations and UI controls surround that model; the snippets do not authenticate, provision resources or replace a vendor SDK. Worked saga references assume reliable local compensation.
Use the scenario to explain access patterns, ownership, failure policy and the operational assumptions behind a cloud service choice.
This generic register is not an RDS, Aurora or Cloud SQL failover implementation. AWS RDS Multi-AZ, Aurora storage/read endpoints and Google Cloud SQL HA/read replicas have distinct topologies and guarantees; consult the selected service design.
Explain one concrete outcome, one provider distinction and one unmodeled production concern.
MAKE IT STICK
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