DEV IN CLOUD: HOW WE ARE DOING IT

Dmytro Voloshyn, co-founder at

Programmer 8+ years Marketing manager in AB-InBev 2+ years Consulting projects, outsource, sales 2+ years Сo—founder&CTO at Preply, 4+ years and now

“Cloud is about how you do computing, not where you do computing”

— Paul Maritz, CEO oF VMware

Trends

Serverless(FaaS) Cloud Native Applications PaaS ecosystems, SaaS’s rise

1. Serverless(FaaS)

Deployment evolution

Rent/Buy Physical server

Snowflake server

Deploy in daysLive for years

Rent a virtualised cloud server

EC2

Deploy in minutesLive for weeks

Containerised deployment

Docker

Deploy in secondsLive for hours

Serverless

FaaS(eg. Lambda)

Deploy in millisecondsLive for seconds

Chatbot :)

AWS Lambda

Function as a unit of application logicSide effects, pure functions, real-life example

MachineAssembly

Procedural

Object oriented

Functional

SaaS -> PaaS -> IaaS -> BaaS -> FaaS

Faster scaling, #NoOps, Less$,

Amazon AWS Lambda, Google Cloud Functions, and Windows Azure Functions

2. Cloud Native Applications

Cloud Native Applications

Antifragile

Pay as you go(pricing on demand)

Hyper scaling(traffic, data, features)

Continuous Delivery

(DevOps)

AntifragileEverything fails all the timeFocus on MTTR not MTTF8 fallacies

Pay as you goProvisioned vs. OnDemandFixed servers vs. resource pooling#NoDevOps

HyperscalingElastic, on-demandMicroservisesServerless

Continuous Delivery

Diagnosability: traces, metrics, logsAutomate tasks, scriptsAutomated delivery

Loose coupling

Microservices

Containerisation

Virtualise ‘em all

Microservices

Containerisation

Composition

Bring everyone together

Microservices

Containerisation

Composition

Orchestration

Orchestration codifies knowledge

Microservices

Treat resources as cattle not pets

VS.

Orchestration example

{ "AWSTemplateFormatVersion": "2010-09-09",

"Parameters": {

"DBUser": { "NoEcho": "true", "Type": "String", "Description": "Test database admin account name", "MinLength": "1", "MaxLength": "16", "AllowedPattern": "[a-zA-Z][a-zA-Z0-9]*", "ConstraintDescription": "must begin with a letter and contain only alphanumeric characters." },

"DBPassword": { "NoEcho": "true", "Type": "String", "Description": "Test database admin account password", "MinLength": "8", "MaxLength": "41", "AllowedPattern": "[a-zA-Z0-9]*", "ConstraintDescription": "must contain only alphanumeric characters." },

"OperatorEMail": { "Description": "EMail address to notify if there are any operational issues", "Type": "String", "AllowedPattern": "([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)", "ConstraintDescription": "must be a valid email address." } },

"Mappings" : { "Region2Principal" : { "us-east-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "us-west-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "us-west-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "eu-west-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "ap-southeast-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "ap-northeast-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "ap-northeast-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "ap-southeast-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "ap-south-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "us-east-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "sa-east-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }, "cn-north-1" : { "EC2Principal" : "ec2.amazonaws.com.cn", "OpsWorksPrincipal" : "opsworks.amazonaws.com.cn" }, "eu-central-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" } }

},

},

"SampleConfigurationTemplate" : { "Type" : "AWS::ElasticBeanstalk::ConfigurationTemplate", "Properties" : { "ApplicationName" : { "Ref" : "SampleApplication" }, "Description" : "Default Configuration Version 1.0", "SolutionStackName" : "64bit Amazon Linux 2015.03 v2.0.1 running Tomcat 7 Java 7", "OptionSettings" : [{ "Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "JDBC_CONNECTION_STRING", "Value": { "Fn::Join": ["", ["jdbc:mysql://", { "Fn::GetAtt": ["SampleDB", "Endpoint.Address"] }, ":", { "Fn::GetAtt": ["SampleDB", "Endpoint.Port"] }, "/beanstalkdb" ]] } }, { "Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "PARAM1", "Value": { "Ref": "DBUser" } }, { "Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "PARAM2", "Value": { "Ref": "DBPassword" } }, { "Namespace": "aws:autoscaling:launchconfiguration", "OptionName": "SecurityGroups", "Value": { "Ref": "InstanceSecurityGroup" } }, { "Namespace": "aws:autoscaling:launchconfiguration", "OptionName": "IamInstanceProfile", "Value": { "Ref": "WebServerInstanceProfile" } }] } },

"SampleEnvironment": { "Type": "AWS::ElasticBeanstalk::Environment", "Properties": { "Description": "AWS Elastic Beanstalk Environment running Sample Application", "ApplicationName": { "Ref": "SampleApplication" }, "TemplateName": { "Ref" : "SampleConfigurationTemplate" }, "VersionLabel": { "Ref" : "SampleApplicationVersion" } } },

"InstanceSecurityGroup": { "Type": "AWS::EC2::SecurityGroup", "Properties": { "GroupDescription": "RDS allows ingress from EC2 instances in this group.", "SecurityGroupIngress": [] } },

"DBEC2SecurityGroup": { "Type": "AWS::EC2::SecurityGroup", "Condition" : "Is-EC2-VPC", "Properties" : { "GroupDescription": "Open database for access", "SecurityGroupIngress" : [{ "IpProtocol" : "tcp", "FromPort" : "3306", "ToPort" : "3306", "SourceSecurityGroupName" : { "Ref" : "InstanceSecurityGroup" } }] } },

"Conditions" : { "Is-EC2-VPC" : { "Fn::Or" : [ {"Fn::Equals" : [{"Ref" : "AWS::Region"}, "eu-central-1" ]}, {"Fn::Equals" : [{"Ref" : "AWS::Region"}, "cn-north-1" ]}]}, "Is-EC2-Classic" : { "Fn::Not" : [{ "Condition" : "Is-EC2-VPC"}]} },

"Resources": { "WebServerRole": { "Type": "AWS::IAM::Role", "Properties" : { "AssumeRolePolicyDocument" : { "Statement" : [{ "Effect" : "Allow", "Principal": { "Service": [{ "Fn::FindInMap" : ["Region2Principal", {"Ref" : "AWS::Region"}, "EC2Principal"]}] }, "Action" : [ "sts:AssumeRole" ] } ] }, "Path": "/" } },

"WebServerRolePolicy": { "Type": "AWS::IAM::Policy", "Properties": { "PolicyName" : "WebServerRole", "PolicyDocument" : { "Statement" : [ { "Effect" : "Allow", "NotAction" : "iam:*", "Resource" : "*" } ] }, "Roles": [ { "Ref": "WebServerRole" } ] } },

"WebServerInstanceProfile": { "Type": "AWS::IAM::InstanceProfile", "Properties": { "Path": "/", "Roles": [ { "Ref": "WebServerRole" } ] } },

"SampleApplication": { "Type": "AWS::ElasticBeanstalk::Application", "Properties": { "Description": "AWS Elastic Beanstalk Sample Application" } },

"SampleApplicationVersion" : { "Type" : "AWS::ElasticBeanstalk::ApplicationVersion", "Properties" : { "Description" : "Version 1.0", "ApplicationName" : { "Ref" : "SampleApplication" }, "SourceBundle" : { "S3Bucket": { "Fn::Join" : ["-", ["cloudformation-examples", {"Ref" : "AWS::Region" }]]}, "S3Key": "CloudFormationBeanstalkRDSExample.war" } }

"DBSecurityGroup": { "Type": "AWS::RDS::DBSecurityGroup", "Condition" : "Is-EC2-Classic", "Properties": { "DBSecurityGroupIngress": { "EC2SecurityGroupName": { "Ref": "InstanceSecurityGroup" } }, "GroupDescription": "database access" } },

"SampleDB": { "Type": "AWS::RDS::DBInstance", "Properties": { "Engine": "MySQL", "DBName": "beanstalkdb", "MasterUsername": { "Ref": "DBUser" }, "DBInstanceClass": "db.t2.small", "AllocatedStorage": "5", "MasterUserPassword": { "Ref": "DBPassword" }, "VPCSecurityGroups": { "Fn::If" : [ "Is-EC2-VPC", [ { "Fn::GetAtt": [ "DBEC2SecurityGroup", "GroupId" ] } ], { "Ref" : "AWS::NoValue" }]}, "DBSecurityGroups": { "Fn::If" : [ "Is-EC2-Classic", [ { "Ref": "DBSecurityGroup" } ], { "Ref" : "AWS::NoValue" }]} } },

"AlarmTopic": { "Type": "AWS::SNS::Topic", "Properties": { "Subscription": [{ "Endpoint": { "Ref": "OperatorEMail" }, "Protocol": "email" }] } },

"CPUAlarmHigh": { "Type": "AWS::CloudWatch::Alarm", "Properties": { "EvaluationPeriods": "10", "Statistic": "Average", "Threshold": "50", "AlarmDescription": "Alarm if CPU too high or metric disappears indicating the RDS database instance is having issues", "Period": "60", "Namespace": "AWS/RDS", "MetricName": "CPUUtilization", "Dimensions": [{ "Name": "DBInstanceIdentifier", "Value": { "Ref": "SampleDB" } }], "ComparisonOperator": "GreaterThanThreshold", "AlarmActions": [{ "Ref": "AlarmTopic" }], "InsufficientDataActions": [{ "Ref": "AlarmTopic" }] } } },

"Outputs": { "URL": { "Description": "URL of the AWS Elastic Beanstalk Environment", "Value": { "Fn::Join": ["", ["http://", { "Fn::GetAtt": ["SampleEnvironment", "EndpointURL"] }]] } } }}

3. PaaS ecosystems, SaaS’s rise

Niche products inside PaaS

AWS IoTAWS LumberyardAWS KinesisAWS EMRAWS ML

ML example

https://habrahabr.ru/company/preply/blog/216729/ceur-ws.org/Vol-1631/164-169.pdf

Localisation/I18BISecurityDevOps

There’s SaaS for that

Localisation/I18

BI

Security

DevOps testing

DevOps logging

If you suck now, you’ll be pleasantly surprised by the lack of change when

you move to Cloud (Chris Hoff)

No matter how good you are at something, there’s always a million

people better than you

It is all about “speed”

We are hiring

Dmytro Voloshyn, Preplyhttps://www.facebook.com/dmytriy.voloshyn