Optimizing FileMaker OData Performance

Beginner

Techniques to improve the speed and efficiency of OData queries against FileMaker Server.

What you'll learn

  • How OData $filter maps to FileMaker find performance
  • Index requirements for efficient OData sorting and filtering
  • Avoiding calculated fields in OData responses
  • Monitoring OData performance using server logs

FileMaker OData translates your HTTP requests into FileMaker find and sort operations. Performance depends on the same factors as FileMaker find performance: indexing, found set size, calculated field overhead, and server load. Knowing the translation helps you write efficient OData queries.

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How $filter maps to FileMaker find

OData $filter translates to a FileMaker find operation. Performance characteristics mirror FileMaker find performance: (1) Filters on indexed fields use FileMaker's index for fast results. (2) Filters on unindexed fields require a full-table scan. (3) `contains()` (substring match) is slower than `startswith()` or `eq` because substring queries cannot use the index efficiently.

HTTP
// Fast: indexed field, equality check:
?$filter=Status eq 'Active'  // uses Status field index

// Slower: unindexed field:
?$filter=InternalNotes eq 'VIP'  // full scan if unindexed

// Slowest: substring on text field:
?$filter=contains(Notes, 'important')  // full scan + text search
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