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Why doesn't Google copy successful startup ideas?
Google is definitely one of the largest players in Internet world. It owns the most popular search engine, mobile operating system and mapping service. It not only has huge user base but also is extremely rich. It can copy and create any product that is proven to be successful with its talent pool and money. But why doesn't Google copy those successful startup ideas? Based on the current status quo and culture gene of Google, there are several reasons Google doesn't copy startup ideas. First, Go...
Why exception would be thrown when deleting element while looping through HashMap in Java
HashMap and other Collection types are frequently used in Java application programming. This post will explain why exception would be thrown when deleting element with Map.remove() while looping through a Map using Iterator. This issue would also occur to other Collection types such as Set, List. Below is a sample code snippet demonstrating the exception thrown. Map<String,String> map = Collections.synchronizedMap(new TreeMap<String,String>()); map.put("key1","value1"); map.put("ke...
JAVA,HASHMAP,CONCURRENTMODIFICATIONEXCEPTION 2018-06-30 12:49:09
Signature sign/verification demo in Java
Digital signature is commonly used in areas where data authentication and integrity are required. It is extremely important to have signature while transferring sensitive data from one peer to other peers through network since there might be malicious applications or man-in-the-middle attacks which may alter the data along the way. Java provides some APIs to generate and verify digital signature. One important class is Signature. When generating the signature, a private key needs to be pa...
Generate certificate in Java -- Self signed certificate
This is the first post in this series which I will show you how to generate SSL certificate in Java programmatically. Certificates are frequently used in SSL communication which requires the authentication of server to client. This is to make the client to trust that the server is actually the one it claims. Certificates are really important on the Internet. All HTTPS communications on the Internet need the server side to present their certificates signed by trusted CAs. The basic flow of a requ...
Java,Certificate,X509 2014-07-30 07:42:18
A Guide on Creating a Magento 2 Extension
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MAGENTO, MAGENTO 2,MAGENTO 2 MODULE CREATOR 2016-02-29 03:08:08
Is Singapore a good place for startups?
Singapore is long time being considered as a perfect place for living and investing given its beautiful environment, warmly climate, well-polished legal system and well-known richness. Its government is relatively young and open-minded. They like to take new challenges and embrace new technologies. It's the first country to open its government data to the world online. Many of you may consider that Singapore would be a perfect place for you to start your next startup. But the tr...
Private LLM Integration with RAGFlow: A Step-by-Step Guide
If you’ve found your way here, you’re probably already excited about the potential of the RAGFlow project and eager to see it in action. I was in the same position, so I delved into the codebase to see how it could work with custom large language models (LLMs). This post will walk you through my findings and show you how to get RAGFlow running with your own LLM. As of now (November 8, 2024), RAGFlow offers limited support for local LLMs, and vLLM&nb...
HeartBleed: OpenBSD now starts to clean up OpenSSL
Since the disclosure of HeartBleed bug in OpenSSL, some arguments emerge around the safety of OpenSSL, the largest open source SSL/TLS library used by large number of servers, applications. Some people are even starting to create their own version of SSL library. This includes OpenBSD, a famous Unix like open source operating system. Just a few days after the HeartBleed bug, OpenBSD forked a new branch of OpenSSL and started to clean up the forked branch and plans to merge it to its own cod...
HeartBleed,OpenBSD 2014-04-15 04:21:26
What is encryption? Its role in the modern age
“Messages and calls are end-to-end encrypted.” If you are a WhatsApp user, you must have read this statement at the top of chats you open. Now, what does it mean? The statement signifies that all the messages or voice notes shared between users are encrypted, and no one can read or listen in on them. As mostly all of us use messaging apps and emails, information security has become a major concern. Moreover, we don’t know how many digital footprints we leave on the web can be t...
DATA SECURITY,VPN 2021-01-21 08:04:16
Eight C++ programming mistakes the compiler won’t catch
C++ is a complex language, full of subtle traps for the unwary. There is an almost infinite number of ways to screw things up. Fortunately, modern compilers are pretty good at detecting a large number of these cases and notifying the programmer via compile errors or warnings. Ultimately, any error that is compiler-detectable becomes a non-issue if properly handled, as it will be caught and fixed before the program leaves development. At worst, a compiler-detectable error results in los...
C++,Compiler,Error detection 2012-04-08 09:55:20
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