Parallel Calls

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Execute multiple inter-canister calls concurrently instead of sequentially. Cover futures::join_all in Rust, async/await patterns in Motoko, composite queries for read-only parallel calls. Handle partial failures when some calls succeed and others fail. Explain performance benefits and when parallel calls are appropriate.

• Portal: building-apps/integrations/advanced-calls.mdx (composite queries section)
• icskills: multi-canister
• Examples: parallel_calls (both), composite_query (both)

• guides/canister-calls/onchain-calls — basic inter-canister calls
• guides/canister-management/optimization — performance improvements
• guides/security/inter-canister-calls — safety of async calls