General process:
* 1. Turn on Bluetooth adaptation
* 2. Obtain the status of the Bluetooth adapter and determine whether the device’s Bluetooth is available.
* 3. When it is judged that the Bluet
Category: Architecture
Architectural design is the product of people’s subjective mapping of elements within a structure and the relationships between elements. Architecture design is a series of related abstract patterns used to guide the design of various aspects of large software systems. The architect’s job responsibility is to transform the customer’s needs into a standardized development plan and text during the development of a software project, and to formulate the overall structure of the project, and guide the entire development team to complete the plan. Architecture design is the early stage of the software design process, which connects the requirements analysis and the design process. The main task of an architect is not to write specific software programs, but to engage in higher-level development and architecture work. He must have a good understanding of development technology, and he needs to have good organizational and management skills.
Solr architecture, how to get dynamic fields in a collection
I’m running Solr 4.10.3.
Set up * _f type dynamic fields
I want to list all added Dynamic fields, but no luck using the /schema/dynamicfields or /schema/fields route.
I saw that t
Distributed Tracking Logging and Integrate with LogStash, Kibana and ElasticSearch
I have worked on Google Dapper (http://research.google.com/pubs/pub36356.html) and eBay CAL transaction log framework (http://devopsdotcom.files.wordpress. com/2012/11/screen-shot-2012-11-11-at-10-
OOP – When to support the inheritance of a combination
This question seems to be repetitive, but it is not the case. I searched on Google and the bus was unable to get conceptual clarity. There are many examples of animals and cars. However, I want to
Object-oriented JavaScript how to create a static class for constants
I decided to put all the constants in a concise class called constants, and wanted to use the dot operator to access its members.
So far , I have tried:
function Constants(){
Constants
Retrieves the last record of each group
Like the title, retrieve the last record of each group.
For example, prepare some data first:
Requirements Group by [Category] and check the record with the largest data in [Qty].
Memory map file mappedbytebuffer
The DirectByteBuffer mentioned in the previous article inherits from MappedByteBuffer
The definition of MappedByteBuffer:
A direct byte buffer whose content is a memory-mapped region of
Retrieve the next minimum element of the Python set
Sieve of Eratosthenes is a fairly fast method of generating prime numbers, as shown below:
>From the set p = (2,3,4 ,…,K) start, i = 2.
>Start from i^2, remove all multiples of i from p.
>R
Efficient use of search engines
1) intitle
This search command is to tell the search engine , The title of the search result must contain the keywords you entered.
Otherwise, sometimes your search page will also inclu
IT knowledge point
The working direction of the IT industry
1. Data storage: disks
1) Three architecture storage methods: SAN, NAS, DAS (specially store data in disk arrays) (shared storage architecture)
2) Distribu