Persistent connections and session state

What is meant by persistent connection?
What is the difference between session and connection TCP?
What are the different types of persistent connections?
What is the disadvantage of HTTP persistent connections?
What is the purpose of using persistent connections?
What is HTTP session vs connection?
What is session and state?
What are the 3 types of sessions?
What are the TCP session states?
What are the four types of connections?
What is persistent vs non-persistent connections?
How do I know if my connection is persistent?
Is persistent HTTP stateful?
Which are benefits of persistent HTTP connections?
What are the disadvantages of persistent?
What is meant by persistent and non persistent connection?
How do I know if my connection is persistent?
What does persistent mean in technology?
What is the difference between a hub and a persistent connection?
What are the two types of HTTP connections?
What is the difference between persistent and non-persistent data?
How do I enable persistent connections?
Why is my connection always unstable?
What makes my connection unstable?
How long do TCP connections stay open?

What is meant by persistent connection?

A persistent connection, also known as a Hypertext Transfer Protocol (HTTP) persistent connection, refers to a network communication channel that remains open for further HTTP requests and responses instead of closing after a single exchange.

What is the difference between session and connection TCP?

Literally : Connection is Physical Communication Channel and Session is a state of information exchange. A Connection may have multiple sessions . The connection is the physical communication channel between SQL Server and the application: the TCP socket, the named pipe, the shared memory region.

What are the different types of persistent connections?

There are two types of persistent connections: the older HTTP/1.0+ “keep-alive” connections and the modern HTTP/1.1 “persistent” connections.

What is the disadvantage of HTTP persistent connections?

Disadvantages. If the client does not close the connection when all of the data it needs has been received, the resources needed to keep the connection open on the server will be unavailable for other clients.

What is the purpose of using persistent connections?

Persistent connections between a web client and a server can be reused for more than one exchange of a request and a response. Persistent connections improve network performance because a new connection does not have to be established for each request.

What is HTTP session vs connection?

Multiple transactions between the same client and server, completed over the same established TCP connection are considered a session. A session may also comprise of multiple TCP connections (again between the same client and server) to improve performance. Sessions rely on HTTP Persistent Connections.

What is session and state?

Session state is an ASP.NET Core scenario for storage of user data while the user browses a web app. Session state uses a store maintained by the app to persist data across requests from a client. The session data is backed by a cache and considered ephemeral data.

What are the 3 types of sessions?

Budget session (February to May) Monsoon session (July to September) Winter session (November to December)

What are the TCP session states?

The states are: LISTEN, SYN-SENT, SYN- RECEIVED, ESTABLISHED, FIN-WAIT-1, FIN-WAIT-2, CLOSE-WAIT, CLOSING, LAST-ACK, TIME-WAIT, and the fictional state CLOSED.

What are the four types of connections?

Internet Connection Types: WiFi, Broadband, DSL, Cable.

What is persistent vs non-persistent connections?

An HTTP connection is a TCP (Transmission Control Protocol) oriented connection and it works on PORT number 80. In non-persistent connection HTTP, there can be at most one object that can be sent over a single TCP connection. In persistent connection HTTP, multiple objects can be sent over a single TCP connection.

How do I know if my connection is persistent?

The best place to start is in the Headers View. The Headers View will identify both the protocol used, as well as other HTTP Headers being sent back. If you see the header: “Connection: close”, then your site is not using persistent connections.

Is persistent HTTP stateful?

HTTP is a stateless (or non-persistent) protocol. Each request is treated by its own. A request will not know what was done in the previous requests.

Which are benefits of persistent HTTP connections?

Persistent HTTP connections have a number of advantages: - By opening and closing fewer TCP connections, CPU time is saved in routers and hosts (clients, servers, proxies, gateways, tunnels, or caches), and memory used for TCP protocol control blocks can be saved in hosts.

What are the disadvantages of persistent?

Disadvantages of persistent connections: In PHP, persistent connections are having some major limitations as follows: Persistent connections may occur server-wide deadlocks and also have database errors during page generation. It also affects transactions, table locks, temporary tables, session variables, etc.

What is meant by persistent and non persistent connection?

How do I know if my connection is persistent?

What does persistent mean in technology?

Persistence is "the continuance of an effect after its cause is removed". In the context of storing data in a computer system, this means that the data survives after the process with which it was created has ended. In other words, for a data store to be considered persistent, it must write to non-volatile storage.

What is the difference between a hub and a persistent connection?

With persistent connections you have to embed the message type in the payload (see Raw sample) but hubs gives you the ability to do RPC over a connection (lets you call methods on on the client from the server and from the server to the client).

What are the two types of HTTP connections?

Non-persistent and persistent are the two types of HTTP connections used to connect the client with the webserver. The non-persistent connection has connection type 1.0 , while the persistent connection has connection type 1.1 .

What is the difference between persistent and non-persistent data?

Persistence is a property of a an individual message. The main difference is that if you are using persistent delivery, messages are persisted to disk/database so that they will survive a broker restart. When using non-persistent delivery, if you kill a broker then you will lose all in-transit messages.

How do I enable persistent connections?

Click Action > Configure Agents > Configure Persistent Connection. Note: The agent must be one for which Agent Manager appears in the Event Manager column. Do one of the following in the Configure Persistent Connection window: To enable the connection, select Enable Persistent Connections for selected agents.

Why is my connection always unstable?

Unstable Wi-Fi is often caused by wireless congestion. Congestion problems are common in apartment complexes or densely-packed neighborhoods when too many people using Wi-Fi lead to overlapping networks, mixed signals, and degraded Wi-Fi performance.

What makes my connection unstable?

Here is why it can happen: Faulty hardware: The router is malfunctioning. Faulty connection: The router has trouble connecting to the Internet. Weak signal: the router is too far from the device.

How long do TCP connections stay open?

Description. Once a TCP connection has been established, that connection is defined to be valid until one side closes it. Once the connection has entered the connected state, it will remain connected indefinitely.