Execution Decision Matrix

Use this matrix to choose the right ta4j execution path for your workload.

Situation	Recommended path	Why	Verification signal
One strategy over one historical series	`BarSeriesManager`	Minimal setup and deterministic iteration	Trades and positions reproduce across reruns
Many strategies or parameter sweeps	`BacktestExecutor`	Batch execution, runtime telemetry, ranking helpers	Top strategy set remains stable under same data/config
Need explicit fill semantics (partial fills, delayed confirms)	Manual loop + `BaseTradingRecord.operate(fill)`	Preserves broker-confirmed execution stream	Recorded fills and open lots match broker feed
Need slippage/stop-limit behavior	`TradeExecutionModel` variants	Aligns simulation with venue assumptions	PnL delta is explainable by configured execution model

Trade execution model chooser

Model	Best for	Caution
`TradeOnNextOpenModel`	Conservative signal-at-close simulation	Can understate fast-close fills
`TradeOnCurrentCloseModel`	Close-on-signal systems	Requires realistic close execution assumptions
`SlippageExecutionModel`	Price-impact modeling	Slippage settings can dominate results
`StopLimitExecutionModel`	Pending-order lifecycle simulation	Needs careful interpretation of rejects/partials