config

const AWSRegion = "us-east-1"

AWSRegion Region of AWS services.

const ActiveReplica = 2 //min

Async migrate control

const BackupsPerInstance = 20 // (InstanceCapacity - InstanceOverhead) / RecoverRate

BackupsPerInstance Number of backup instances used for parallel recovery.

const BucketDuration = 10 // min

Each bucket's active duration

const ChunkThreshold = 125000 // Fraction, ChunkThreshold = InstanceCapacity / 100K * Threshold

Maximum chunk per instance

const Cluster = WindowCluster

const DefaultInstanceCapacity = 1024 * 1000000 // 1GB

InstanceCapacity Capacity of deployed Lambda functions. TODO: Detectable on invocation. Can be specified by option -funcap for now.

const FLAG_CLIENTSIDE_FIRSTD_OPTIMIZATION = 0x0002

FLAG_CLIENTSIDE_FIRSTD_OPTIMIZATION enables D+P optimization on client side.

const FLAG_ENABLE_LOCAL_CACHE = 0x0004

FLAG_ENABLE_LOCAL_CACHE enables local cache.

const FLAG_FIXED_INTERVAL_WARMUP = 0x0001

FLAG_FIXED_INTERVAL_WARMUP warms up lambda with fixed interval regardless workload.

const InstanceDegradeWarmTimeout = 5 * time.Minute

Instance degrade warmup interval

const InstanceOverhead = 100 * 1000000 // MB

InstanceOverhead Memory reserved for running program on Lambda functions.

const InstanceWarmTimeout = 1 * time.Minute

InstanceWarmTimout Interval to warmup Lambda functions.

const LambdaFeatures = protocol.FLAG_ENABLE_WARMUP | protocol.FLAG_ENABLE_PERSISTENT | protocol.FLAG_DISABLE_WAIT_FOR_COS

const LambdaLogLevel = logger.LOG_LEVEL_ALL // Set to logger.LOG_LEVEL_ALL to keep Lambda log level aligned with proxy log level.

const LambdaMaxDeployments = 400

LambdaMaxDeployments Number of Lambda function deployments available.

const LambdaPrefix = "Your Lambda Function Prefix"

LambdaPrefix Prefix of Lambda function, overridable with command line parameter -lambda-prefix.

const LambdaStoreName = "LambdaStore"

LambdaStoreName Obsoleted. Name of Lambda function for replica version.

const NumActiveBuckets = 6

Number of buckets that warmup every InstanceWarmTimeout

const NumAvailableBuckets = 18

Number of buckets before expiring Buckets beyond NumActiveBuckets but within ExpireBucketsNum will get degraded warmup: InstanceDegradeWarmTimeout

const NumLambdaClusters = 12

NumLambdaClusters Number of Lambda function deployments initiated on launching. For window cluster, this must be at least D+P

const ProxyFeatures = FLAG_CLIENTSIDE_FIRSTD_OPTIMIZATION | FLAG_ENABLE_LOCAL_CACHE

const RecoverRate = 40 * 1000000 // Not actually used.

RecoverRate Empirical S3 download rate for specified InstanceCapacity. 40MB for 512, 1024, 1536MB instance, 70MB for 3008MB instance.

const ServerPublicIp = "" // Leave it empty if Lambda VPC is enabled.

ServerPublicIp Public IP of proxy, leave empty if running Lambda functions in VPC.

const SliceSize = 100

Size of a slice if the cluster implementation support. Client library use this value to initialize chunk placements.

const StaticCluster = "static"

Mode of cluster.

const Threshold = 0.9 // Don't set beyond 0.9

Threshold Scaling out avg instance size threshold

const WindowCluster = "window"