// multi-utility computation suite · offline · instant · precise
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│ computation suite │
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dev.database-connection-limits Calculator
Calculates how many application instances can connect to a database before exceeding connection limits, and the role of connection pooling. A Postgres RDS db.t3.micro has max_connections = 66 — 10 app instances with a pool of 10 each exhaust the limit with no headroom.
Inputs
Max Connections
Reference formula or conversion factor shown for context.
App Instances
Reference formula or conversion factor shown for context.
Pool Per Instance
Reference formula or conversion factor shown for context.
Reserve
Reference formula or conversion factor shown for context.
Results
connections used
The portion already consumed or allocated from the total available.
connections available (after reserve)
Sample size or count used in the calculation.
utilization
Fraction of capacity actually being used. Above 80–85% is typically considered high utilisation; above 95% leads to queuing and latency spikes.
max safe instances
Sample size or count used in the calculation.
reserve
Reference formula or conversion factor shown for context.
alert
Reference formula or conversion factor shown for context.