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8 Ways to Optimize AWS Glue Jobs in a Nutshell

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  Improving the performance of AWS Glue jobs involves several strategies that target different aspects of the ETL (Extract, Transform, Load) process. Here are some key practices. 1. Optimize Job Scripts Partitioning : Ensure your data is properly partitioned. Partitioning divides your data into manageable chunks, allowing parallel processing and reducing the amount of data scanned. Filtering : Apply pushdown predicates to filter data early in the ETL process, reducing the amount of data processed downstream. Compression : Use compressed file formats (e.g., Parquet, ORC) for your data sources and sinks. These formats not only reduce storage costs but also improve I/O performance. Optimize Transformations : Minimize the number of transformations and actions in your script. Combine transformations where possible and use DataFrame APIs which are optimized for performance. 2. Use Appropriate Data Formats Parquet and ORC : These columnar formats are efficient for storage and querying, signif
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Tokenization: Vault based Vs Vault-less

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Tokenization means generating a random number as an alternative for a Credit card (PAN) number. The random number can be Numeric/Non-numeric. It is in such a format that others cannot decode it.   
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The popular tokenization server is the Vault server. It generates a random Token for each transaction customer made at Merchant outlets. You can find how card numbers are masked with junk characters in the pdf provided. Here is the Visa Security Tokenization Pdf.


Vault vs Vault-less

Two Top Tokenization Servers.

  1. Vault based server
  2. Vault-less server

    What is Tokenization?



    1. Vault based server

    It stores a Card number (PAN) and a Token in a Table of the Teradata database as Key and value pairs. Due to the growing volume of transactions, the handling of the database became a big challenge for acquirers. 

    For each transaction, the vault server stores a record. That row contains both the Credit card number and its Token. When you use the same card multiple times, it generates different Tokens.  It is the basic concept of any Token server.  


    The tokenization process


    2. Vault-less Server.


    The Vault-less server is much faster. It generates random numbers based on the Split-algorithm logic. So decoding is harder. For each credit card transaction, it generates a new token.


    Moreover, it does not store card numbers and tokens. It generates both numeric or alphanumeric Tokens. Here is the list of top differences between the Vault and Vaultless servers.


    The principle behind this is to generate a random number and send it out.


    Comments

    1. SuzyOctober 14, 2018 at 4:34 PM

      Hello Srini

      Just read your article on vault -v- vaultless, this question can only be answered depending on the vault itself - was it built to be scalable? Does it store every transaction? Quite simply no it does not, but like i say it all depends on how the vault was built. Is it more secure than vaultless - definately.

      ReplyDelete
      Replies
      1. SriniOctober 26, 2018 at 7:06 PM

        Vault-less is reversible security method that replaces sensitive data with fake data that looks and feels just like the real thing. So vault-less is advanced than Vault.

        Delete

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