Registry, Transactions & Performance (#1)

This adds transactions with Commit() and Rollback() methods with their local state, registry for columns and other optimizations. The optimizations make batch updates 3x faster and batch deletes 2x faster.
kelindar · Jun 15, 2021 · 030133f · 030133f
1 parent 1f72448
commit 030133f
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diff --git a/README.md b/README.md
@@ -78,7 +78,7 @@ func main(){
 	// Same condition as above, but we also select the actual names of those 
 	// players and iterate through them.
 	players.Query(func(txn column.Txn) error {
-		txn.With("human", "mage", "old").Select(func(v column.Selector) bool {
+		txn.With("human", "mage", "old").Range(func(v column.Selector) bool {
 			println(v.String()) // prints the name
 			return true
 		}, "name") // The column to select
@@ -91,14 +91,14 @@ func main(){
 
 ```
 cpu: Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
-BenchmarkCollection/insert-8         26252403     48.08 ns/op     2 B/op     0 allocs/op
-BenchmarkCollection/fetch-8          29705175     35.74 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/count-8            102036     10886 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/count-idx-8       9166742     127.7 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/find-8             107601     11519 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/find-idx-8        1557285     769.6 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/update-at-8      25257255     47.87 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/update-all-8        51469     22525 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/delete-at-8       2319102     509.2 ns/op     0 B/op     0 allocs/op
-BenchmarkCollection/delete-all-8       169375      7377 ns/op     0 B/op     0 allocs/op
+BenchmarkCollection/insert-8         27589314       43.05 ns/op     1 B/op     0 allocs/op
+BenchmarkCollection/fetch-8          21041593       56.84 ns/op     0 B/op     0 allocs/op
+BenchmarkCollection/count-slow-8       109107    11001 ns/op        0 B/op     0 allocs/op
+BenchmarkCollection/count-8           9300270      128.6 ns/op      0 B/op     0 allocs/op
+BenchmarkCollection/range-8           1871557      641.0 ns/op      0 B/op     0 allocs/op
+BenchmarkCollection/select-8          1214799      975.8 ns/op      0 B/op     0 allocs/op
+BenchmarkCollection/update-at-8      28573945       41.99 ns/op     0 B/op     0 allocs/op
+BenchmarkCollection/update-all-8       184694      6481 ns/op       0 B/op     0 allocs/op
+BenchmarkCollection/delete-at-8       2613982      459.1 ns/op      0 B/op     0 allocs/op
+BenchmarkCollection/delete-all-8       324321     3730 ns/op        0 B/op     0 allocs/op
 ```