Ken Tune ken-tune
ken-tune
/ install-eks-pre-requisites-centos.sh
Last active
July 21, 2020 17:06
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| #!/bin/bash | |
| echo "Installing kubectl, AWS Command Line Utility, eksctl and helm in a Centos environment" | |
| echo | |
| # First configure yum to use https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 as a repo" | |
| cat <<EOF > /etc/yum.repos.d/kubernetes.repo | |
| [kubernetes] | |
| name=Kubernetes | |
| baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 |
ken-tune
/ bitMaskCreationForBlockStorage.java
Created
July 9, 2020 17:09
Bit mask required to be used when mapping logical keys into physical keys using Aerospike block storage technique
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| /** | |
| * Obtain bit mask required to ensure we have on average a specific number of logical objects in each physical object | |
| * @param keySpaceSize - size of key space | |
| * @param objectsPerBlock - average number of objects stored in each physical object | |
| * @return bit mask as a BigInteger | |
| */ | |
| public static BigInteger getBitMask(long keySpaceSize,int objectsPerBlock){ | |
| // No of bits required is | |
| // log(keySpaceSize/objectsPerBlock) / log(2) | |
| // as reqd # of keys is keySpaceSize/objectsPerBlock |
ken-tune
/ getDeviceMetaDataUsingBlocking.java
Created
July 9, 2020 16:56
Retrieve logical object from within a physical object stored by Aerospike
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| public static final int BIT_MASK_SIZE = 25; | |
| public static final BigInteger BIT_MASK = (new BigInteger("2")).pow(BIT_MASK_SIZE).subtract(new BigInteger("1")); | |
| public static final String METADATA_BIN_NAME = "deviceMetaData"; | |
| public static final AerospikeClient aeroClient = new AerospikeClient(hostName,aerospikeServicePort); | |
| /** | |
| * Get device meta data from Aerospike having employed 'blocking' technique | |
| * @param deviceIDasUUID - device id | |
| * @return device meta data | |
| */ |
ken-tune
/ storeDeviceMetaDataUsingBlocking.java
Created
July 9, 2020 16:51
How to store logical objects inside physical Aerospike objects to reduce key space size
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| public static final int BIT_MASK_SIZE = 25; | |
| public static final BigInteger BIT_MASK = (new BigInteger("2")).pow(BIT_MASK_SIZE).subtract(new BigInteger("1")); | |
| public static final String METADATA_BIN_NAME = "deviceMetaData"; | |
| public static final AerospikeClient aeroClient = new AerospikeClient(hostName,aerospikeServicePort); | |
| /** | |
| * Store device meta data in Aerospike using 'blocking' technique | |
| * @param deviceIDasUUID - device id | |
| * @param deviceMetaData - metadat | |
| */ |