分散トレーシングの技術選定・OSS 貢献, Stackdriver Trace での性能可視化・改善 / Distributed Tracing case study

パフォーマンスに苦労している並列処理システムを改善するために Stackdriver Traceを導入して動作の可視化を行った結果、 ボトルネックの存在が判明してパフォーマンスを改善できた事例について紹介します。

この事例でStackdriver Traceを選定した過程や OpenTelemetry へコントリビュートした経緯についても共有します。

また、新規開発のGraphQLサーバへ導入して REST APIサーバと通信をまたいだ可視化を行った事例についても紹介します。

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8. or " "
   

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10. logger.info("hogehoge")
    

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12. ※
    

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22. OpenCensus OpenTelemetry
    

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50. compile 'io.opencensus:opencensus-api:0.16.0'
    compile 'io.opencensus:opencensus-exporter-trace-Stackdriver:0.16.0'
    runtime 'io.opencensus:opencensus-impl:0.16.0'
    

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51. class Foo {
    private static final Tracer tracer = Tracing.getTracer();
    public static void main(String ...args) {
    try {
    setupOpenCensusAndStackdriverExporter();
    } catch (IOException e) {
    return;
    }
    yourMethod()
    }
    void yourMethod() {
    try (Scope ss = tracer.spanBuilder("yourMethod").startScopedSpan()) {
    //
    Span span = tracer.getCurrentSpan();
    span.addAnnotation("name_of_tag", "foobarbaz");
    }
    }
    }
    

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52. public static void main(String ...args) {
    try {
    //
    setupOpenCensusAndStackdriverExporter();
    } catch (IOException e) {
    return;
    }
    }
    

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53. void yourMethod() {
    // span
    // try-with-resources close
    try (Scope ss = tracer.spanBuilder("do_something").startScopedSpan()) {
    //
    //
    //
    // Span
    Span span = tracer.getCurrentSpan();
    //
    span.addAnnotation("name_of_tag", "foobarbaz");
    }
    }
    

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54. @Configuration
    

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56. @Configuration
    

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57. compile 'com.m3.tracing:spring-boot:1.0.1'
    M3_TRACER_FQCN
    com.m3.tracing.tracer.opencensus.M3OpenCensusTracer
    

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58. public static void main(String ...args) {
    try {
    //
    initTracingSdk();
    } catch (IOException e) {
    return;
    }
    }
    

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59. @Service
    class Foo {
    private final M3Tracer tracer;
    // Constructor Injection (DI)
    public Foo(M3Tracer tracer) {
    this.tracer = tracer;
    }
    void yourMethod() {
    try (TraceSpan span = tracer.startSpan("do_something")) {
    //
    span.set("name_of_tag", "foobarbaz");
    }
    }
    }
    

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60. void yourMethod() {
    // span
    // try-with-resources close
    try (TraceSpan span = tracer.startSpan("do_something")) {
    //
    //
    //
    //
    span.set("name_of_tag", "foobarbaz");
    }
    }
    

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61. void yourMethod() {
    // span
    // try-with-resources close
    try (TraceSpan span = tracer.startSpan("do_something")) {
    //
    //
    //
    //
    span.set("name_of_tag", "foobarbaz");
    }
    }
    

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