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The documentation for Encoding Policy states that
The default indexing applied to string columns is built for term searches. If you only query for specific values in the column, COGS might be reduced if the index is simplified using the encoding profile Identifier. For more information, see the string data type.
How does the indexing for Identifier affects performance for hasPrefix, hasSuffix and regex matches? Is it inadequate to such queries?
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How to advance edit distance with operation take an anagram of the existing word. every interim step must be a word from a list of words .
The standard technique for anagrams is to store words in canonical sorted order, e.g. "Banana" becomes "aaabnn". Do that for all valid words, then consider Levenshtein distances between those. You will want to map from canonical to a valid set, e.g. valid['dgo'] = {'dog', 'god'}
Take a look at tail /usr/share/dict/words if you need a set of valid words.
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I am starting a new project and I have the problem with the measurability of the requirement usability.
With is an good atomic measurable indicator for usability?
Number of klicks or keystrokes per action, weighted with the estimated relative frequency of the action.
However, this metric does not take into account a few important aspects of usability:
How easy it is to memorize the sequence of clicks and keystrokes
The amount of feedback provided to the user
The likelyhood of invalid inputs
Still it can be useful for comparing user interfaces that are similar with respect to these aspects.
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What are the Disadvantages of GET method in comparison to POST? which one is better in case of HTTP Protocol?
Neither of these method is "better" or "worse" they exist for different reasons. The best practices dictate that you use GET to retrieve information/data/pages while POST is for sending your data for the server.
The main difference is in the way the actual data of your request gets to the server. For GET data is assumed to be arguments and is encoded into your address as name=value pairs. For POST name=value pairs go into the body of the message.
One disadvantage GET I can think of is security - if you absolutely want your data to be encrypted you absolutely want POST as only body of the messages can be enchrypted.
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Please suggest any widely used query parameter encryption technique that works best for common servers and client side libraries?
The requirement is to encrypt entire query string right after the '?' so that no field names or values can be read in clear.
Is there any HTTP level standard for the same?
One of the ways could be,
mycommerce.com/gp/goldbox?gb_f_GB-SUPPLE=sortOrder:BY_SCORE,enforcedCategories:165796011&pf_rd_p=2208383682&pf_rd_s=slot-3&pf_rd_t=701
would become
mycommerce.com/gp/goldbox?params=<encrypted string>
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Are HTTP GET variables indexable by Google?
e.g. if I link to http://myhomepage.com/show?id=14&awesome-calvin-and-hobbes-stuffed-zombies-i-made
will the part after the & be picked up by Google's search engine as having to do with Calvin and Hobbes?
Yes, you can see it from search results (e.g. search for "search q" - many of the results include HTTP GET variables). Some CMS systems e.g. Drupal use such URLs by default.
Yes. Google does index URLs with query strings and they do parse them for keywords. It doesn't mean you'll rank well for them, though.