What is Load Balancing?

Load balancing defined — the traffic-cop analogy

Load balancing spreads incoming requests across multiple servers so no single machine carries the load — the traffic cop at the toll plaza, waving each vehicle to the shortest lane.

• Distribution algorithms decide who gets the next request: round-robin, least-connections, or ip_hash.

• Health checks probe each backend and pull failed servers from rotation automatically.

• Failover is the payoff: one server dying becomes a routing change, not an outage.

• Layer 7 balancers read the request itself; Layer 4 balancers route by IP and port.

The honest thresholds for when an Indian business actually needs one — and the options that scale up to it — follow below. The clustered infrastructure that pairs with it sits on cloud hosting, and the VPS alternative in the cloud vs VPS guide.

How algorithms work — round robin, least connections, ip_hash

How algorithms work — round robin, least connections, ip_hash. Do the change this heading names on one site first, then check it in a private browser window or in the mail client, depending on the topic. Change one setting at a time, and undo it if the result is wrong before you try the next. If you want the Jaipur desk to look with you, email support@webji.services — that mailbox is staffed 24/7 in Hindi and English. Phone +91 141 4941811 is business hours only.

Health checks and automatic failover

Health checks and automatic failover. Do the change this heading names on one site first, then check it in a private browser window or in the mail client, depending on the topic. Change one setting at a time, and undo it if the result is wrong before you try the next. If you want the Jaipur desk to look with you, email support@webji.services — that mailbox is staffed 24/7 in Hindi and English. Phone +91 141 4941811 is business hours only.

Layer 4 vs Layer 7 — the practical difference

Layer 4 versus Layer 7 names where in the network stack the balancer operates — and what it can see. Layer 4 (transport): the balancer routes by IP and port without reading the request — fast, protocol-agnostic, unable to make content decisions. Layer 7 (application): the balancer reads HTTP — URLs, headers, cookies — and routes by them: /api/ to the API pool, /images/ to the static pool, cart cookies to a sticky session.

The practical rule: Layer 4 for raw throughput on simple TCP workloads, Layer 7 for anything needing routing intelligence, header manipulation or session persistence. Most web applications want Layer 7, because the intelligence is the feature; the speed difference is real but rarely the deciding factor at the scales where balancing begins.

Sticky sessions for carts and logins

Do not cache the cart, checkout or my-account URLs. Test a full order in the gateway's test mode, including GST and shipping, before you announce the store. A fast homepage with a broken checkout is not a working shop.

Load balancer vs CDN vs caching

On health checks, the honest summary is that defaults matter more than brand names — a well-set budget plan outranks a mis-tuned premium one. WebJi® documents its defaults openly and adjusts them per ticket when workloads need it.

When an Indian business actually needs one

When an Indian business actually needs one. Do the change this heading names on one site first, then check it in a private browser window or in the mail client, depending on the topic. Change one setting at a time, and undo it if the result is wrong before you try the next. If you want the Jaipur desk to look with you, email support@webji.services — that mailbox is staffed 24/7 in Hindi and English. Phone +91 141 4941811 is business hours only.