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Break Me If You Can
Practical Guide to Building Fault-tolerant Systems
DevNexus, Atlanta, GA
February 20, 2020
Alex Borysov, Software Engineer @ Netflix
Mykyta Protsenko, Software Engineer @ Netflix
Who are we?
Alex Borysov
Software Engineer @Netflix
Mykyta Protsenko
Software Engineer @Netflix
@aiborisov
@mykyta_p
@WeAreNetflix
Fault-Tolerance?
@aiborisov
@mykyta_p
Fault vs Error vs Failure
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Fault
@aiborisov
@mykyta_p
incorrect
internal
state
Picture by Bob McMillan. Public domain. See slides ##178-181 for details
@aiborisov
@mykyta_p
Error
@aiborisov
@mykyta_p
visibly
incorrect
behaviour
Picture by David Goehring. CC BY 2.0. See slides ##178-181 for details
@aiborisov
@mykyta_p
Failure
@aiborisov
@mykyta_p
main
functionality
is broken
Picture by Camerafiend. CC BY-SA 3.0. See slides ##178-181 for details
@aiborisov
@mykyta_p
RMS Titanic vs Miracle on the Hudson
@aiborisov
@mykyta_p
Willy Stöwer. Public domain. See slides ##178-181 for details By Greg Lam Pak Ng. CC BY 2.0. See slides ##178-181 for details
@aiborisov
@mykyta_p
RMS Titanic
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@mykyta_p
Fault: Hitting an iceberg
Error: Water in the hull
Failure: Sinking
Willy Stöwer. Public domain. See slides ##178-181 for details
@aiborisov
@mykyta_p
Miracle on the Hudson
@aiborisov
@mykyta_p
Fault: Hitting geese at 859 m
Error: Engines shut down
No Failure!
By Greg Lam Pak Ng. CC BY 2.0. See slides ##178-181 for details
Fault Error Failure
@aiborisov
@mykyta_p
→ →
Fault Error Failure
@aiborisov
@mykyta_p
→ →
@aiborisov
@mykyta_p
Fault Tolerance
@aiborisov
@mykyta_p
Code and Design Patterns
Product-Driven Decisions
Communication
By Greg Lam Pak Ng. CC BY 2.0. See slides ##178-181 for details
Dodging Geese
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Clouds Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
See slides ##178-181 for licensing details
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Clouds Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
Clouds Service
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
Clouds Service
Geese Service
@aiborisov
@mykyta_p
Dodging Geese Architecture
Geese Service
Clouds ServiceAPI
Gateway
@aiborisov
@mykyta_p
TOP-5
Leaderboard Service
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Clouds Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Clouds Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Dodging Geese Architecture
TOP-5
Geese Service
Clouds Service
Leaderboard Service
API
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Leaderboard API (REST)
/players/<username>/score
{"name": "Jane", "score": 100}
/leaderboard/top/<n>
[{"name": "Jane", "score": 100},
{"name": "John", "score": 50}, ...]
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
gRPC Service Definitions
@aiborisov
@mykyta_p
service GeeseService {
// Return next line of geese.
rpc GetGeese (GetGeeseRequest) returns (GeeseResponse);
}
@aiborisov
@mykyta_p
gRPC Service Definitions
@aiborisov
@mykyta_p
service GeeseService {
// Return next line of geese.
rpc GetGeese (GetGeeseRequest) returns (GeeseResponse);
}
service CloudsService {
// Return next line of clouds.
rpc GetClouds (GetCloudsRequest) returns (CloudsResponse);
}
@aiborisov
@mykyta_p
service FixtureService {
// Return next line of geese and clouds.
rpc GetFixture (GetFixtureRequest) returns (FixtureResponse);
}
gRPC Gateway Service
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
service FixtureService {
// Return next line of geese and clouds.
rpc GetFixture (GetFixtureRequest) returns (FixtureResponse);
}
+ = Fixture
gRPC Gateway Service
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@aiborisov
@mykyta_p
public class FixtureService extends FixtureServiceImplBase {
Gateway Fixture Service
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@mykyta_p
Gateway Fixture Service
API
Gateway
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@mykyta_p
Geese Service
Clouds Service
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@mykyta_p
@aiborisov
@mykyta_p
Non-Blocking Calls
Don’t block
Send requests in parallel
Combine results when ready
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public class FixtureService extends FixtureServiceImplBase {
Gateway Service Implementation
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private final GeeseServiceFutureStub geeseClient = ...;
private final CloudsServiceFutureStub cloudsClient = ...;
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@mykyta_p
public class FixtureService extends FixtureServiceImplBase {
Gateway Service Implementation
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@mykyta_p
private final GeeseServiceFutureStub geeseClient = ...;
private final CloudsServiceFutureStub cloudsClient = ...;
@Override
public void getFixture(GetFixtureRequest request, StreamObserver<FixtureResponse> response) {
ListenableFuture<GeeseResponse> geese = geeseClient.getGeese(toGeese(request));
ListenableFuture<CloudsResponse> clouds = cloudsClient.getClouds(toClouds(request));
ListenableFuture<List<GeneratedMessageV3>> geeseAndClouds =
Futures.allAsList(geese, clouds);
...
@aiborisov
@mykyta_p
public class FixtureService extends FixtureServiceImplBase {
Gateway Service Implementation
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@mykyta_p
private final GeeseServiceFutureStub geeseClient = ...;
private final CloudsServiceFutureStub cloudsClient = ...;
@Override
public void getFixture(GetFixtureRequest request, StreamObserver<FixtureResponse> response) {
ListenableFuture<GeeseResponse> geese = geeseClient.getGeese(toGeese(request));
ListenableFuture<CloudsResponse> clouds = cloudsClient.getClouds(toClouds(request));
ListenableFuture<List<GeneratedMessageV3>> geeseAndClouds =
Futures.allAsList(geese, clouds);
...
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Slow dependencies
Slow upstream services
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Timeouts
Guaranteed latency
for integration points
@aiborisov
@mykyta_p
public class FixtureService extends FixtureServiceImplBase {
...
Gateway Service Implementation
@aiborisov
@mykyta_p
@Override
public void getFixture(GetFixtureRequest request, StreamObserver<FixtureResponse> response) {
ListenableFuture<GeeseResponse> geese =
geeseClient.getGeese(toGeese(request));
ListenableFuture<CloudsResponse> clouds =
cloudsClient.getClouds(toClouds(request));
ListenableFuture<List<GeneratedMessageV3>> geeseAndClouds =
Futures.allAsList(geese, clouds);
...
@aiborisov
@mykyta_p
public class FixtureService extends FixtureServiceImplBase {
...
Gateway Service Implementation
@aiborisov
@mykyta_p
@Override
public void getFixture(GetFixtureRequest request, StreamObserver<FixtureResponse> response) {
ListenableFuture<GeeseResponse> geese =
geeseClient.withDeadlineAfter(500, MILLISECONDS).getGeese(toGeeseRequest(request));
ListenableFuture<CloudsResponse> clouds =
cloudsClient.withDeadlineAfter(500, MILLISECONDS).getClouds(toCloudsRequest(request));
ListenableFuture<List<GeneratedMessageV3>> geeseAndClouds =
Futures.allAsList(geese, clouds);
...
@aiborisov
@mykyta_p
@Override
public void getFixture(GetFixtureRequest request, StreamObserver<FixtureResponse> response) {
ListenableFuture<GeeseResponse> geese =
geeseClient.withDeadlineAfter(500, MILLISECONDS).getGeese(toGeeseRequest(request));
ListenableFuture<CloudsResponse> clouds =
cloudsClient.withDeadlineAfter(500, MILLISECONDS).getClouds(toCloudsRequest(request));
ListenableFuture<List<GeneratedMessageV3>> geeseAndClouds =
Futures.allAsList(geese, clouds);
...
public class FixtureService extends FixtureServiceImplBase {
...
Gateway Service Implementation
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
REST: Non-Blocking Calls
CompletableFuture<List<LeaderboardEntry>> leaderboard =
httpClient
.get().uri("/top/5")
.exchange()
.timeout(Duration.ofMillis(500))
.flatMap(cr -> cr.bodyToMono(...))
.toFuture();
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
REST: Non-Blocking Calls with Timeout
CompletableFuture<List<LeaderboardEntry>> leaderboard =
httpClient
.get().uri("/top/5")
.exchange()
.timeout(Duration.ofMillis(500))
.flatMap(cr -> cr.bodyToMono(...))
.toFuture();
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Demo
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@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
No Geese
No Clouds
Blinking Leaderboard
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Observability
Monitoring:
QPS, latency, errors, ...
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Observability: gRPC
Monitoring:
QPS, latency, errors, ...
// OpenCensus
RpcViews.registerAllViews();
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Tracing: gRPC
GrpcTracing grpcTracing =
GrpcTracing.create(...);
ManagedChannelBuilder
...
.intercept(grpcTracing.newClientInterceptor())
.build() ;
ServerBuilder.forPort(8080)
...
.intercept(grpcTracing.newServerInterceptor())
.build();
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Tracing: gRPC
GrpcTracing grpcTracing =
GrpcTracing.create(...);
ManagedChannelBuilder
...
.intercept(grpcTracing.newClientInterceptor())
.build();
ServerBuilder.forPort(8080)
...
.intercept(grpcTracing.newServerInterceptor())
.build();
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Tracing: REST
build.gradle:
dependencies {
compile '...:spring-cloud-sleuth-zipkin'
compile '...:spring-cloud-starter-sleuth'
...
}
application.properties:
spring.zipkin.baseUrl=http://zipkin:9411/
spring.sleuth.sampler.probability=1.0
spring.sleuth.web.enabled=true
@aiborisov
@mykyta_p
Demo
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Clouds are slow
Geese are fast
Entire call fails
@aiborisov
@mykyta_p
ListenableFuture<GeeseResponse> geese =
geeseClient..getGeese(toGeese(request));
ListenableFuture<CloudsResponse> clouds =
cloudsClient.getClouds(toClouds(request));
ListenableFuture<List<GeneratedMessageV3>>
geeseAndClouds =
Futures.allAsList(geese, clouds);
...
@aiborisov
@mykyta_p
Partial Degradation
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Partial Degradation
ListenableFuture<GeeseResponse> geese =
geeseClient..getGeese(toGeese(request));
ListenableFuture<CloudsResponse> clouds =
cloudsClient.getClouds(toClouds(request));
ListenableFuture<List<GeneratedMessageV3>>
geeseAndClouds =
Futures.successfulAsList(geese, clouds);
...
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Some L-board calls fail
L-board latency is low
Scores disappear
@aiborisov
@mykyta_p
CompletableFuture<List<Leaderboard>> request() {
return httpClient
.get().uri("/top/5").exchange()
.timeout(Duration.ofMillis(500))
.flatMap(...).toFuture();
}
@aiborisov
@mykyta_p
Retries: REST
@aiborisov
@mykyta_p
CompletableFuture<List<Leaderboard>> request() {
return httpClient
.get().uri("/top/5").exchange()
.timeout(Duration.ofMillis(500))
.flatMap(...).toFuture();
}
RetryPolicy RETRY_POLICY = new RetryPolicy()
.retryOn(IOException.class)
.withMaxRetries(MAX_RETRIES);
CompletableFuture<List<Leaderboard>> top5 =
Failsafe.with(RETRY_POLICY)
...
.future(this::httpRequest);
@aiborisov
@mykyta_p
Retries: REST
@aiborisov
@mykyta_p
Demo
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Retry slow calls?
Retry failed calls?
Retry network faults?
@aiborisov
@mykyta_p
Retry Storm
Clouds ServiceAPI
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
new RetryPolicy()
.withBackoff(
MIN_DELAY,
MAX_DELAY,
TimeUnit.MILLISECONDS, 100.0)
...
...
@aiborisov
@mykyta_p
Exponential Backoffs
@aiborisov
@mykyta_p
Failsafe
.with(RETRY_POLICY)
.withFallback(
() -> emptyLeaderboard())
...
@aiborisov
@mykyta_p
Fallbacks
@aiborisov
@mykyta_p
Failsafe
.with(RETRY_POLICY)
.withFallback(
() -> cachedLeaderboard())
...
@aiborisov
@mykyta_p
Fallbacks
@aiborisov
@mykyta_p
Retry
Fallback
Fail Fast
@aiborisov
@mykyta_p
On Error
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
High 99%ile latency
100 requests
Error probability?
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
High 99%ile latency
100 requests
Error probability:
1 – 0.99^100 = 63%
@aiborisov
@mykyta_p
Tail-Tolerance
@aiborisov
@mykyta_p
Request
200 ms deadline
@aiborisov
@mykyta_p
Tail-Tolerance
@aiborisov
@mykyta_p
Request
200 ms deadline
↓ 100 ms
@aiborisov
@mykyta_p
Tail-Tolerance
@aiborisov
@mykyta_p
Request
200 ms deadline
↓ 100 ms
Request
@aiborisov
@mykyta_p
Tail-Tolerance
@aiborisov
@mykyta_p
Request
200 ms deadline
↓ 100 ms
Request
Fastest Response
@aiborisov
@mykyta_p
High 99%ile latency
100 requests
@aiborisov
@mykyta_p
Request Hedging
@aiborisov
@mykyta_p
High 99%ile latency
100 requests
Error probability:
63% x 0.01 < 1%
@aiborisov
@mykyta_p
Request Hedging
@aiborisov
@mykyta_p
In gRPC service config
"hedgingPolicy": {
"maxAttempts": 3,
"hedgingDelay": "100ms"
}
@aiborisov
@mykyta_p
Hedging in gRPC
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
High mean latency
100 requests
Error probability?
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
High mean latency
100 requests
Error probability:
1 – 0.50^100 = 99.99...%
@aiborisov
@mykyta_p
CircuitBreaker CIRCUIT_BREAKER =
new CircuitBreaker()
.withFailureThreshold(3, 5);
CompletableFuture<...> top5 =
Failsafe
.with(CIRCUIT_BREAKER)
.with(RETRY_POLICY)
...
.future(this::httpRequest);
@aiborisov
@mykyta_p
Circuit Breaker
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Error Handling
100% Error Fail Fast
Intermittent Slow Hedging
Intermittent Fast Retry
Fallback✚
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Error Handling
100% Error Fail Fast
Intermittent Slow Hedging
Intermittent Fast Retry
Fallback✚
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Client-driven deadline
Don’t process failed calls
@aiborisov
@mykyta_p
Deadlines
API
Gateway
@aiborisov
@mykyta_p
See slides ##178-181 for licensing details
@aiborisov
@mykyta_p
Deadlines
API
Gateway
@aiborisov
@mykyta_p
Deadline 500 ms
→
@aiborisov
@mykyta_p
Deadlines
API
Gateway
@aiborisov
@mykyta_p
Deadline 500 ms
→ Spent 300 ms
→
@aiborisov
@mykyta_p
Deadlines
API
Gateway
@aiborisov
@mykyta_p
Spent 300 ms
→ Spent 250 ms
Deadline 500 ms
→
X
@aiborisov
@mykyta_p
Deadlines
API
Gateway
@aiborisov
@mykyta_p
Spent 300 ms
→ Spent 250 ms
Deadline 500 ms
→
X
→
@aiborisov
@mykyta_p
Deadline Propagation
API
Gateway
@aiborisov
@mykyta_p
Deadline 500 ms
→
@aiborisov
@mykyta_p
Deadline 200 ms
Deadline Propagation
API
Gateway
@aiborisov
@mykyta_p
Deadline 500 ms
→ Spent 300 ms
→
@aiborisov
@mykyta_p
Deadline 200 ms
Deadline Propagation
API
Gateway
@aiborisov
@mykyta_p
Spent 300 ms
→ Spent 250 ms
Deadline 500 ms
→
X
@aiborisov
@mykyta_p
Deadline 200 ms
Deadline Propagation
API
Gateway
@aiborisov
@mykyta_p
Spent 300 ms
→ Spent 250 ms
Deadline -50 ms
Deadline 500 ms
→
X
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Throughput has limits
Exceeding limits?
@aiborisov
@mykyta_p
new ConcurrencyLimitServletFilter(
new ServletLimiterBuilder()
.partitionByHeader("GEESE_TYPE",
c -> c.assign("premium", 0.9)
.assign("free", 0.1))
.limiter(l -> l.limit(
newBuilder()
.initialLimit(1000)...);
@aiborisov
@mykyta_p
REST
@aiborisov
@mykyta_p
new ConcurrencyLimitServletFilter(
new ServletLimiterBuilder()
.partitionByHeader("GEESE_TYPE",
c -> c.assign("premium", 0.9)
.assign("free", 0.1))
.limiter(l -> l.limit(
newBuilder()
.initialLimit(1000)...);
@aiborisov
@mykyta_p
REST
@aiborisov
@mykyta_p
var limiter =
new GrpcServerLimiterBuilder()
.partitionByHeader(GEESE_TYPE)
.partition("premium", 0.9)
.partition("free", 0.1)
.limiter(l ->
l.limit(
newBuilder()
.initialLimit(1000)...);
ConcurrencyLimitServerInterceptor
.newBuilder(limiter).build();
@aiborisov
@mykyta_p
gRPC: Server
@aiborisov
@mykyta_p
var limiter =
new GrpcServerLimiterBuilder()
.partitionByHeader(GEESE_TYPE)
.partition("premium", 0.9)
.partition("free", 0.1)
.limiter(l ->
l.limit(
newBuilder()
.initialLimit(1000)...);
ConcurrencyLimitServerInterceptor
.newBuilder(limiter).build();
@aiborisov
@mykyta_p
gRPC: Server
@aiborisov
@mykyta_p
new GrpcClientLimiterBuilder()
.limit(
newBuilder()
.initialLimit(1000).build())
.blockOnLimit(false) // fail-fast
.build();
@aiborisov
@mykyta_p
gRPC: Client
@aiborisov
@mykyta_p
Demo
@aiborisov
@mykyta_p
Demo
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Monitoring
@aiborisov
@mykyta_p
APM
Service
metrics
Distributed
tracing
Business
metrics
Picture by Alex Borysov. CC BY 2.0. See slides ##178-181 for details
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Code and Design
Timeouts / Deadline Propagation
Retries / Hedging
Proper Fallbacks
Concurrency Limits
Load Shedding
Observability
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Request for each response
Requests don’t change
@aiborisov
@mykyta_p
Redundant Requests
@aiborisov
@mykyta_p
GeeseRequest
GeeseResponse
GeeseRequest
GeeseResponse
GeeseRequest
GeeseResponse
@aiborisov
@mykyta_p
Redundant Requests
@aiborisov
@mykyta_p
GeeseRequest
GeeseResponse
GeeseRequest
GeeseResponse
GeeseRequest
GeeseResponse
@aiborisov
@mykyta_p
Streaming
@aiborisov
@mykyta_p
GeeseRequest
GeeseResponse
GeeseResponse
GeeseResponse
@aiborisov
@mykyta_p
service GeeseService {
rpc GetGeese (GetGeeseRequest)
returns (GeeseResponse);
}
service CloudsService {
rpc GetClouds (GetCloudsRequest)
returns (CloudsResponse);
}
@aiborisov
@mykyta_p
gRPC Streaming
@aiborisov
@mykyta_p
service GeeseService {
rpc GetGeese (GetGeeseRequest)
returns (stream GeeseResponse);
}
service CloudsService {
rpc GetClouds (GetCloudsRequest)
returns (stream CloudsResponse);
}
@aiborisov
@mykyta_p
gRPC Streaming
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Server faster than client
Client cannot keep up
@aiborisov
@mykyta_p
Too Many Streaming Responses
@aiborisov
@mykyta_p
GeeseRequest
@aiborisov
@mykyta_p
Too Many Streaming Responses
@aiborisov
@mykyta_p
GeeseRequest
X
@aiborisov
@mykyta_p
Flow Control
@aiborisov
@mykyta_p
GeeseRequest
@aiborisov
@mykyta_p
Flow Control
@aiborisov
@mykyta_p
GeeseRequest
5
@aiborisov
@mykyta_p
Flow Control
@aiborisov
@mykyta_p
GeeseRequest
5
@aiborisov
@mykyta_p
Flow Control
@aiborisov
@mykyta_p
GeeseRequest
5
3
@aiborisov
@mykyta_p
Flow Control
@aiborisov
@mykyta_p
GeeseRequest
5
3
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Decople producer and
consumer
Decople failures
@aiborisov
@mykyta_p
Message-driven
Elastic
Responsive
Resilient
@aiborisov
@mykyta_p
Reactive Systems
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Per
instance
limits
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
Why didn’t Rose make room for
Jack on the door?
Willy Stöwer. Public domain. See slides ##178-181 for details
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Door Capacity
@aiborisov
@mykyta_p
Why didn’t Rose make room for
Jack on the door?
“ The answer is very simple
because it says on page 147
that Jack dies “
James Cameron
Willy Stöwer. Public domain. See slides ##178-181 for details
@aiborisov
@mykyta_p
Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Capacity
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Autoscaling
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Prescaling
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Prescaling
@aiborisov
@mykyta_p
See slides ##178-181 for licensing details.
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Services
break
each other
@aiborisov
@mykyta_p
$
Free and Premium?
Free
Premium
$
@aiborisov
@mykyta_p
Free and Premium Outage
Free
Premium
$
$
@aiborisov
@mykyta_p
$
$
Bulkheads
Free
Premium
$
@aiborisov
@mykyta_p
Bulkheads
Free
Premium $
$
$
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Bulkheads
By Request Type
By Client Priority
By Region
By Availability Zone
etc
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Deployments
can be
risky
@aiborisov
@mykyta_p
Exploding Whale
Engineering solution
Half a ton of dynamite
@aiborisov
@mykyta_p
Illustration by Greg Williams. CC BY 3.0. See slides ##178-181
@aiborisov
@mykyta_p
Exploding Whale
Engineering solution
Half a ton of dynamite
Ooops! Non-limited blast radius
Learn more at TheExplodingWhale.com
@aiborisov
@mykyta_p
Illustration by Greg Williams. CC BY 3.0. See slides ##178-181
@aiborisov
@mykyta_p
Demo
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Bad user experience
Metrics are not enough
@aiborisov
@mykyta_p
Prober
TOP-5
API
Gateway
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Prober
TOP-5
API
Gateway
@aiborisov
@mykyta_p
See slides ##178-181 for licensing details.
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Prober
Availability
Latency SLO
Response verification
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Prober
Availability
Latency SLO
Response verification
CloudProber.org
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Technical
solutions
are not enough
@aiborisov
@mykyta_p
Communication
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Communication
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Communication Channels
@aiborisov
@mykyta_p
GEESE
at 270
@aiborisov
@mykyta_p
Communication Channels
@aiborisov
@mykyta_p
GEESE
at 270
@aiborisov
@mykyta_p
GEESE
at 270
Communication Channels
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
GEESE
at 270
Communication Channels
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Postmortems
@aiborisov
@mykyta_p
Blameless
Constructive
@aiborisov
@mykyta_p
Postmortems
@aiborisov
@mykyta_p
Blameless
Constructive
Social
See slides ##178-181 for licensing details
@aiborisov
@mykyta_p
Postmortems
@aiborisov
@mykyta_p
Timeline
Causes
Remedies
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Learn from Failure
Blameless postmortems
Alert playbooks
Incident knowledge base
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Libraries and Tools
@aiborisov
@mykyta_p
Demo: github.com/break-me-if-you-can
Slides: slides-devnexus.breakit.xyz
Failsafe: github.com/jhalterman/failsafe
Observability: opencensus.io, opentracing.io
Prober: cloudprober.org
Concurrency Limits: github.com/Netflix/concurrency-limits
@aiborisov
@mykyta_p
Demo UI
@HalloGene_
Yevgen Golubenko
Twitter: @HalloGene_
github.com/HalloGene
Picture by Yevgen Golubenko. Also see slides ##178-181 for licensing details
@aiborisov
@mykyta_p
Books
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
Fault-Tolerance
Code & Design Patterns
Product decisions
Communication culture
@aiborisov
@mykyta_p
@aiborisov
@mykyta_p
AMA @ the Netflix Booth (#13)
@aiborisov
@mykyta_p
Thursday, Feb 20th
12:50 PM ask Mykyta Protsenko & Alex Borysov anything about
fault-tolerance
3:10 PM ask Nadav Cohen anything about developer tooling
Friday, Feb 21th
10:00 AM ask Philip Fisher-Ogden anything about Netflix’s streaming
architecture
12:50 PM ask Sangeeta Narayanan anything about cloud native services
3:10 PM ask Vinod Viswanathan anything about media processing
@aiborisov
@mykyta_p
Images and Licensing
Images of geese, clouds, pilots, plane, arrows, cup, airport traffic control tower are property of Mykyta Protsenko and Alex Borysov, if not
stated otherwise (see below). All Rights Reserved.
Other images used:
commons.wikimedia.org/wiki/File:FEMA_-_16381_-_Photograph_by_Bob_McMillan_taken_on_09-28-2005_in_Texas.jpg
- Picture by Bob McMillan, the US federal government work, public domain
www.flickr.com/photos/carbonnyc/3290528875
- Picture by David Goehring. Attribution 2.0 Generic (CC BY 2.0): creativecommons.org/licenses/by/2.0
- changes were made
www.flickr.com/photos/carbonnyc/3290528875
- Picture by Camerafiend. Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0): creativecommons.org/licenses/by-sa/3.0/deed.en
- no changes were made
commons.wikimedia.org/wiki/File:Titanic_sinking,_painting_by_Willy_St%C3%B6wer.jpg
- Willy Stöwer. Public domain work of art
@aiborisov
@mykyta_p
Images and Licensing
www.flickr.com/photos/22608787@N00/3200086900
- Picture y Greg Lam Pak Ng. Attribution 2.0 Generic (CC BY 2.0): creativecommons.org/licenses/by/2.0
- no changes were made
piq.codeus.net/picture/31994/Blue-Game-Boy-Color
- Blue Game Boy Color by kure
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made
piq.codeus.net/picture/191706/The-Sun
- The Sun by Vinicius615
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made
Slide #106:
- Picture by Alex Borysov. Attribution 2.0 Generic (CC BY 2.0): creativecommons.org/licenses/by/2.0
@aiborisov
@mykyta_p
Images and Licensing
piq.codeus.net/picture/254492/CVsantahat
- Santa hat for CommanderVideo, CVsantahat by anonymous
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- no changes were made
piq.codeus.net/picture/423109/UFO
- UFO by anonymous
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- no changes were made
piq.codeus.net/picture/334023/beer
- beer by Investa
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made
@aiborisov
@mykyta_p
Images and Licensing
piq.codeus.net/picture/444498/Beer-Bottle
- Beer Bottle by jacklrj
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made
https://piq.codeus.net/picture/330338/Deal-With-It
- Deal With It by Shiro
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made
https://commons.wikimedia.org/wiki/File:Whale_WikiWorld.png
- Cartoon illustration has been created by Greg Williams in cooperation with the Wikimedia Foundation
- Attribution 3.0 Unported (CC BY 3.0): creativecommons.org/licenses/by/3.0
- changes were made

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