buffer-slayer 是一個把請求在內存中 buffer 并批量發送的工具，適用于批量能顯著提升性能的組件（redis-client、jdbc), 支持一對一的回調。

快速啟動

io.bufferslayerbuffer-spring-jdbc1.1.0

ReporterProperties?reporterProperties?=?new?ReporterProperties()
????????.setBufferedMaxMessages(500)
????????.setPendingMaxMessages(10000)
????????.setMetrics("inmemory")
????????.setMetricsExporter("http")
????????.setParallelismPerBatch(5)
????????.setSenderExecutor(new?ThreadPoolExecutor(200,
????????????200,?0,?TimeUnit.MILLISECONDS,?new?SynchronousQueue<>()));

BatchedJdbcTemplate?template?=?new?BatchedJdbcTemplate(reporterProperties);
template.setDataSource(dataSource);

Promise?promise?=?template.update(...);
promise.done(success?->?...)
???????.fail(reject?->?...);

吞吐量對比

Benchmark                                                      Mode  Cnt       Score  Units
BatchedJdbcTemplateBenchmark.high_contention_batched          thrpt   15    8709.042  ops/s
BatchedJdbcTemplateBenchmark.high_contention_unbatched        thrpt   15     271.529  ops/s
BatchedJdbcTemplateBenchmark.mild_contention_batched          thrpt   15    2146.595  ops/s
BatchedJdbcTemplateBenchmark.mild_contention_unbatched        thrpt   15     262.621  ops/s
BatchedJdbcTemplateBenchmark.no_contention_batched            thrpt   15    1194.852  ops/s
BatchedJdbcTemplateBenchmark.no_contention_unbatched          thrpt   15     201.806  ops/s

?