[Feature] add a cache to the FetchResult codepath to avoid API calls (#…

…45)

lint: fix `ConnectionId`

Fix CI for current master (#47)

* lint: fix `ConnectionId`

* Test fixes for previous change (`41c90a09`)

* nit: tweaks to dsn-test

Co-authored-by: Agam Brahma <agam@sigmacomputing.com>

fix var inits (#46)

connection.go

@@ -76,6 +76,7 @@ type snowflakeConn struct {
 	SQLState        string
 	telemetry       *snowflakeTelemetry
 	internal        InternalClient
+	execRespCache   *execRespCache
 }
 
 var (
@@ -235,6 +236,9 @@ func (sc *snowflakeConn) cleanup() {
 	}
 	sc.rest = nil
 	sc.cfg = nil
+
+	releaseExecRespCache(sc.execRespCache)
+	sc.execRespCache = nil
 }
 
 func (sc *snowflakeConn) Close() (err error) {
@@ -756,6 +760,12 @@ func buildSnowflakeConn(ctx context.Context, config Config) (*snowflakeConn, err
 	} else {
 		tokenAccessor = getSimpleTokenAccessor()
 	}
+	if sc.cfg.DisableTelemetry {
+		sc.telemetry = &snowflakeTelemetry{enabled: false}
+	}
+	if sc.cfg.ConnectionID != "" {
+		sc.execRespCache = acquireExecRespCache(sc.cfg.ConnectionID)
+	}
 
 	// authenticate
 	sc.rest = &snowflakeRestful{