1 // Copyright 2017, OpenCensus Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package readme 16 17 import ( 18 "context" 19 20 "go.opencensus.io/trace" 21 ) 22 23 func traceExamples() { 24 ctx := context.Background() 25 26 // START startend 27 ctx, span := trace.StartSpan(ctx, "cache.Get") 28 defer span.End() 29 30 // Do work to get from cache. 31 // END startend 32 } 33